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Shannon Gaffney, DO

Diagnostic Radiology · Stanford

NPI 1548459340

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Offices
4

Offices

4 locations · Stanford Health Care · Bay Imaging Consultants Medical Group Inc · John Muir Trauma Physicians Billing Service · John Muir Magnetic Imaging Center

Looking this up.

Hospitals listed: John Muir Medical Center - Concord Campus · John Muir Medical Center - Walnut Creek Campus · Stanford Health Care · Stanford Health Care Tri-Valley. That is not proof they admit you there this week.

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Gaffney’s office to ask if they take your plan before you enroll.

Hospitals they work in

4 hospitals

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

  • John Muir Medical Center - Concord CampusConcord, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend it
    Overall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.235, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.675, Oct 2024 – Sep 2025
  • John Muir Medical Center - Walnut Creek CampusWalnut Creek, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend it
    Overall rating: 2 of 5 starsWorse than the national rate — Abdominopelvic accidental puncture or laceration rate: 2.01 (1.17 to 2.85) · 2,206 cases, Jul 2022 – Jun 2024Worse than the national rate — Death rate among surgical inpatients with serious treatable complications: 222.42 (177.82 to 267.02) · 120 cases, Jul 2022 – Jun 2024Worse than the national rate — Pressure ulcer rate: 1.4 (0.91 to 1.9) · 9,764 cases, Jul 2022 – Jun 2024Worse than the national rate — SSI - Colon Surgery: 2.734, Oct 2024 – Sep 2025Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.536, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.341, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.455, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.245, Oct 2024 – Sep 2025
  • Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
    Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024
  • Stanford Health Care Tri-ValleyPleasanton, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Stanford Health Care, which runs 3 hospitalsPatients rate it 3 of 5 · 74% would definitely recommend it
    Overall rating: 5 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.178, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.237, Oct 2024 – Sep 2025
See every measure and the patient survey for John Muir Medical Center - Concord Campus

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 0 better, 7 the same, 0 worse of 7 measures. Readmissions: 1 better, 9 the same, 1 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at John Muir Medical Center - Concord Campus
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.235BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.675BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.11 (0.21 to 2) · 1,612 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.02 (0.77 to 1.28)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths184.13 (136.65 to 231.6) · 86 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.2 · 175 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.6 · 124 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.4 · 172 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths8 · 537 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths13.5 · 434 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths13 · 215 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.8 · 3,208 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.32 (0.13 to 0.51) · 7,626 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.23 (0.04 to 0.41) · 8,660 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.1 (1.29 to 4.91) · 2,723 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.21 (0 to 2.51) · 1,208 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths3 (1.7 to 4.3) · 2,355 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.77 (3.24 to 12.3) · 1,216 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths3.43 (0.43 to 6.43) · 1,253 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.93 (0.47 to 3.4) · 388 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths1.14 (0.58 to 1.69) · 6,288 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.1 · 263 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.636No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.254No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.904No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits13.5 · 312 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits19.1 · 768 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits-6.8 · 295 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-3.1 · 648 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits31.1 · 433 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits17.1 · 504 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits6.7 (5.1 to 8.8) · 476 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.9 (10.5 to 15.7) · 476 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6.1 · 250 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits8.8 · 154 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits21.7 · 186 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.4 (9.9 to 17.9) · 192 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.7 to 1.2) · 546 casesNo differentJan 2024 – Dec 2024

What patients said (521 patients answered, 23% of those asked)

Patient survey stars by topic at John Muir Medical Center - Concord Campus
Cleanliness4
Nurse communication3
Doctor communication3
Communication about medicines2
Discharge information3
Overall hospital rating3
Quietness2
Recommend hospital4
Share of patients giving the best answer at John Muir Medical Center - Concord Campus
Room was "always" clean72%
Nurses "always" communicated well78%
Doctors "always" communicated well80%
Staff "always" explained57%
Yes, staff "did" give patients this information86%
Yes, staff "did" give patients information about help after discharge88%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully79%
Doctors "always" treated them with courtesy and respect84%
Patients who gave a rating of "9" or "10" (high)72%
Staff "always" explained new medications70%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully73%
Nurses "always" treated them with courtesy and respect83%
"Always" quiet at night46%
"YES", patients would definitely recommend the hospital77%
Staff "always" explained possible side effects44%
Yes, staff "did" give patients information about possible symptoms84%
See every measure and the patient survey for John Muir Medical Center - Walnut Creek Campus

Behind the star rating — Deaths: 3 better, 2 the same, 2 worse of 7 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 3 better, 5 the same, 2 worse of 10 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at John Muir Medical Center - Walnut Creek Campus
Abdominopelvic accidental puncture or laceration rateComplications and deaths2.01 (1.17 to 2.85) · 2,206 casesWorseJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths222.42 (177.82 to 267.02) · 120 casesWorseJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths1.4 (0.91 to 1.9) · 9,764 casesWorseJul 2022 – Jun 2024
SSI - Colon SurgeryInfections2.734WorseOct 2024 – Sep 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.536BetterOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.341BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.455BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.245BetterOct 2024 – Sep 2025
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.14 (0.87 to 1.4)No differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths6.4 · 131 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10 · 148 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.8 · 695 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths12.5 · 827 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths14.1 · 509 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.4 · 4,483 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.35 (0.18 to 0.53) · 11,630 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.22 (0.05 to 0.39) · 11,793 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.33 (1.69 to 4.96) · 3,268 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.37 (0 to 2.94) · 1,631 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.76 (1.43 to 4.09) · 3,066 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths6.12 (0.22 to 12.02) · 1,580 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths4.43 (1.21 to 7.64) · 1,594 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.82 (0.4 to 3.24) · 685 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.9 · 615 casesNoneApr 2023 – Mar 2025
SSI - Abdominal HysterectomyInfections1.88No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.7 · 93 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits19.9 · 729 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits-30.1 · 91 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-13 · 736 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits34.8 · 842 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.7 · 818 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.3 (3.3 to 8.4) · 28 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits10.8 (7.2 to 15.5) · 28 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits4.9 · 584 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.4 · 139 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.2 (9.9 to 17.9) · 222 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1.1 (0.8 to 1.5) · 321 casesNo differentJan 2024 – Dec 2024

What patients said (758 patients answered, 24% of those asked)

Patient survey stars by topic at John Muir Medical Center - Walnut Creek Campus
Cleanliness3
Nurse communication3
Doctor communication3
Communication about medicines2
Discharge information4
Overall hospital rating3
Quietness3
Recommend hospital4
Share of patients giving the best answer at John Muir Medical Center - Walnut Creek Campus
Room was "always" clean65%
Nurses "always" communicated well75%
Doctors "always" communicated well76%
Staff "always" explained55%
Yes, staff "did" give patients this information87%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand70%
Doctors "always" listened carefully75%
Doctors "always" treated them with courtesy and respect82%
Patients who gave a rating of "9" or "10" (high)69%
Staff "always" explained new medications68%
Nurses "always" explained things so they could understand71%
Nurses "always" listened carefully72%
Nurses "always" treated them with courtesy and respect83%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital77%
Staff "always" explained possible side effects42%
Yes, staff "did" give patients information about possible symptoms87%
See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%
See every measure and the patient survey for Stanford Health Care Tri-Valley

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 0 worse of 7 measures. Readmissions: 2 better, 7 the same, 0 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Stanford Health Care Tri-Valley
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.178BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.237BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.79 (0 to 1.73) · 1,041 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.79 (0.5 to 1.08)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths145.81 (96.5 to 195.12) · 72 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths2.9 · 55 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths8.6 · 92 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths12.5 · 96 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.5 · 395 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 391 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths10.1 · 162 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3 · 1,736 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.16 (0 to 0.37) · 4,425 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.22 (0.02 to 0.41) · 4,771 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.45 (1.46 to 5.44) · 1,403 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.5 (0.05 to 2.94) · 645 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths1.81 (0.38 to 3.24) · 1,279 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths8.53 (3.2 to 13.85) · 639 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.15 (1.89 to 8.41) · 648 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.61 (0.14 to 3.07) · 370 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.16 (0 to 0.83) · 4,160 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 74 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.369No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections1.112No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits13.1 · 110 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.1 · 437 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits-5.8 · 94 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-19.3 · 456 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-0.3 · 402 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits15.8 · 358 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits6.8 (4.7 to 9.6) · 198 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits10.1 (7.5 to 13.6) · 198 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.3 · 80 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.9 · 46 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.3 · 92 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.4 (9.6 to 16.2) · 1,532 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.8 to 1.2) · 929 casesNo differentJan 2024 – Dec 2024

What patients said (1,268 patients answered, 26% of those asked)

Patient survey stars by topic at Stanford Health Care Tri-Valley
Cleanliness3
Nurse communication3
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating3
Quietness2
Recommend hospital4
Share of patients giving the best answer at Stanford Health Care Tri-Valley
Room was "always" clean65%
Nurses "always" communicated well77%
Doctors "always" communicated well79%
Staff "always" explained58%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge88%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)70%
Staff "always" explained new medications72%
Nurses "always" explained things so they could understand73%
Nurses "always" listened carefully74%
Nurses "always" treated them with courtesy and respect84%
"Always" quiet at night42%
"YES", patients would definitely recommend the hospital74%
Staff "always" explained possible side effects44%
Yes, staff "did" give patients information about possible symptoms89%

Original Medicare doctor bills

$162,094

Medicare paid this office $162,094 for 2,337 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Screening mammography1,348$53,852$40
Screening 3d breast mammography1,340$42,037$31
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)340$7,849$22
Diagnostic mammography of 1 breast209$7,373$31
Diagnostic mammography of both breasts186$6,682$36
See all 23 services
Every Original Medicare service billed
Screening mammography1,348$53,852$40
Screening 3d breast mammography1,340$42,037$31
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)340$7,849$22
Diagnostic mammography of 1 breast209$7,373$31
Diagnostic mammography of both breasts186$6,682$36
Limited ultrasound scan of 1 breast220$6,179$27
Biopsy of breast and placement of locating device using ultrasound, first growth35$4,695$130
Biopsy of breast and placement of locating device using x-ray with needle, first growth35$4,683$134
Mri scan of both breasts49$4,637$89
Screening mammography69$2,752$40
Ct scan of abdomen and pelvis with contrast32$2,433$76
Screening 3d breast mammography69$2,161$31
X-ray of chest, 1 view240$1,810$7
Placement of locating device in breast using imaging guidance, first growth21$1,615$77
Ct scan of abdomen and pelvis without contrast20$1,387$69
Placement of locating device in breast using ultrasound guidance, first growth17$1,123$66
Limited ultrasound scan of joint or other extremity structure except blood vessels34$966$27
Ultrasound study of one arm or leg veins with compression and maneuvers29$548$18
Ultrasound study of arm or leg veins with compression and maneuvers16$453$28
X-ray of surgical specimen27$349$12
Complete ultrasound scan behind abdominal cavity11$337$31
X-ray of chest, 2 views32$297$9
X-ray of abdomen, 1 view18$139$8

Who their Medicare patients are

2,337 Original Medicare patients in 2024. Average age 74 · Under 65 5% · 85 and older 10% · Women 90% · Also on Medicaid 15% · Health risk score 1.20. At or below the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.

Conditions among them: High blood pressure 67% · Cancer 24% · Diabetes 23% · Chronic kidney disease 22% · Depression 20% · Coronary heart disease 17% · Atrial fibrillation 14% · Heart failure 13% · COPD 13% · Stroke 7% · Dementia 6%.

The office billed $1,399,026, Medicare allowed $183,587 and paid $162,094; for 5,023 services of 90 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare by year
20242,3375,023741.20$1,399,026$162,094
20231,3515,568741.09$654,682$101,513
20221,4523,683741.36$494,444$87,274
20219261,268742.28$204,436$32,815
2020572844732.37$146,962$24,185
20191,2362,234722.06$382,761$80,792
20189742,162721.48$315,993$75,268
2017116272721.03$51,324$11,144
2016132645681.32$144,500$19,310
20151212691.36$8,300$1,767

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 19 services

Original Medicare services billed in 2023
Screening mammography717$29,175$41
Screening 3d breast mammography712$22,926$32
Mri scan of both breasts36$13,303$370
Diagnostic mammography of 1 breast133$4,618$32
Diagnostic mammography of both breasts103$3,769$37
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)158$3,646$22
Limited ultrasound scan of 1 breast107$3,168$28
Biopsy of breast and placement of locating device using ultrasound, first growth22$2,875$131
Biopsy of breast and placement of locating device using x-ray with needle, first growth19$2,558$135
Screening mammography36$1,465$41
Placement of locating device in breast using imaging guidance, first growth14$1,295$86
Screening 3d breast mammography36$1,159$32
X-ray of chest, 1 view124$1,013$8
Ct scan of abdomen and pelvis with contrast13$1,009$78
Injection, gadobutrol, 0.1 ml37$779$0
X-ray of surgical specimen27$406$14
Ultrasound study of one arm or leg veins with compression and maneuvers20$370$19
Limited ultrasound scan of joint or other extremity structure except blood vessels12$353$29
X-ray of chest, 2 views30$281$9

2022: 23 services

Original Medicare services billed in 2022
Screening mammography613$25,043$41
Screening 3d breast mammography581$18,993$33
Mri scan of both breasts14$5,213$372
Diagnostic mammography of both breasts108$4,208$39
Diagnostic mammography of 1 breast98$3,299$33
Limited ultrasound scan of 1 breast100$3,200$29
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)115$2,725$24
Ct scan of abdomen and pelvis without contrast34$2,399$71
Screening mammography54$2,210$41
Ct scan head or brain without contrast60$2,057$34
Screening 3d breast mammography54$1,768$33
Ct scan of abdomen and pelvis with contrast24$1,708$71
X-ray of chest, 1 view193$1,477$7
Ct scan of blood vessels of chest with contrast22$1,424$65
X-ray of chest, 2 views60$530$9
Ct scan of chest without contrast11$491$45
Complete ultrasound scan behind abdominal cavity13$407$31
Ultrasound study of one arm or leg veins with compression and maneuvers17$318$19
Injection, gadobutrol, 0.1 ml15$317$0
Ultrasound study of arm or leg veins with compression and maneuvers11$292$27
Limited ultrasound scan of joint or other extremity structure except blood vessels13$271$19
Limited ultrasound scan of abdomen12$270$22
X-ray of surgical specimen11$178$14

2021: 19 services

Original Medicare services billed in 2021
Ct scan of abdomen and pelvis with contrast50$3,962$78
Ct scan head or brain without contrast98$3,437$35
X-ray of chest, 1 view417$3,417$8
Ct scan of abdomen and pelvis without contrast34$2,534$75
Ct scan of blood vessels of chest with contrast25$1,920$74
Screening mammography35$1,476$42
Ct scan of chest without contrast28$1,191$43
Screening 3d breast mammography33$1,102$33
Mri scan of brain without contrast16$1,001$63
Ct scan of blood vessels of head with contrast11$810$74
Ct scan of upper spine without contrast19$805$42
Ultrasound study of arm or leg veins with compression and maneuvers25$724$29
Complete ultrasound scan behind abdominal cavity19$587$31
Ct scan of chest with contrast11$528$48
Ultrasound study of one arm or leg veins with compression and maneuvers23$394$17
X-ray of chest, 2 views31$284$9
X-ray of hip, 2-3 views20$207$9
X-ray of knee, 3 views15$131$8
X-ray of foot, minimum of 3 views19$125$6

2020: 16 services

Original Medicare services billed in 2020
Ct scan head or brain without contrast91$3,439$37
Ct scan of abdomen and pelvis with contrast28$2,346$81
X-ray of chest, 1 view248$2,251$8
Ct scan of abdomen and pelvis without contrast25$1,783$71
Ct scan of blood vessels of chest with contrast14$1,119$80
Ct scan of blood vessels of head with contrast12$918$76
Ct scan of upper spine without contrast19$831$44
Ct scan of blood vessels of neck with contrast11$810$74
Ct scan of chest without contrast15$752$50
Ultrasound study of arm or leg veins with compression and maneuvers20$602$30
Ultrasound of both sides of head and neck blood flow12$420$35
Complete ultrasound scan behind abdominal cavity12$391$33
Ultrasound study of one arm or leg veins with compression and maneuvers16$330$19
X-ray of chest, 2 views23$221$10
X-ray of hip, 2-3 views13$131$10
X-ray of abdomen, 1 view12$97$8

2019: 32 services

Original Medicare services billed in 2019
Screening mammography114$13,149$114
Screening mammography312$12,888$41
Screening 3d breast mammography312$10,142$33
Screening 3d breast mammography113$5,800$51
Ct scan head or brain without contrast133$5,081$37
Ct scan of abdomen and pelvis with contrast50$4,173$82
Ct scan of abdomen and pelvis without contrast32$2,572$78
X-ray of chest, 1 view291$2,515$8
Ct scan of blood vessels of chest with contrast23$1,845$80
Diagnostic mammography of both breasts37$1,378$37
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)56$1,358$24
Ct scan of chest without contrast26$1,338$51
Limited ultrasound scan of 1 breast36$985$26
Ct scan of blood vessels of neck with contrast13$965$74
Diagnostic mammography of 1 breast30$951$32
Ct scan of upper spine without contrast20$948$47
Ct scan of blood vessels of head with contrast12$938$78
Mri scan of brain without contrast14$923$66
Nuclear medicine studies of heart muscle at rest and with stress and spect12$853$71
X-ray of chest, 2 views62$618$10
Ct scan of chest with contrast11$584$53
Complete ultrasound scan of abdomen16$573$36
Ultrasound study of arm or leg veins with compression and maneuvers18$548$30
Complete ultrasound scan behind abdominal cavity13$428$33
Ultrasound study of one arm or leg veins with compression and maneuvers20$398$20
Ct scan of face without contrast11$374$34
Limited ultrasound scan of abdomen13$331$25
X-ray of hip, 2-3 views19$193$10
X-ray of foot, minimum of 3 views15$128$8
X-ray of abdomen, 1 view14$123$8
X-ray of knee, 3 views12$112$9
X-ray of shoulder, minimum of 2 views11$94$9

2018: 19 services

Original Medicare services billed in 2018
Screening mammography388$15,759$41
Screening mammography123$12,770$104
Screening 3d breast mammography388$12,402$32
Screening 3d breast mammography123$5,905$48
Ct scan of abdomen and pelvis with contrast28$2,229$80
Ct scan head or brain without contrast57$2,150$36
Diagnostic mammography of 1 breast52$1,852$34
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)64$1,663$25
Diagnostic mammography of both breasts39$1,598$41
Ct scan of abdomen and pelvis without contrast17$1,288$76
X-ray of chest, 1 view135$1,149$8
Limited ultrasound scan of 1 breast38$1,099$27
Ct scan of blood vessels of chest with contrast14$1,097$78
Mri scan of brain without contrast17$1,091$64
Ct scan of chest without contrast11$550$50
Limited ultrasound scan of abdomen11$278$25
X-ray of chest, 2 views27$257$10
X-ray of knee, 3 views11$83$8
X-ray of surgical specimen11$77$7

2017: 6 services

Original Medicare services billed in 2017
Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed42$1,633$39
Screening 3d breast mammography42$1,344$32
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)51$1,298$24
Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral27$978$33
Diagnostic mammography, including computer-aided detection (cad) when performed; bilateral26$965$37
Limited ultrasound scan of 1 breast30$902$27

2016: 4 services

Original Medicare services billed in 2016
Ultrasound study of arm or leg veins with compression and maneuvers27$3,757$139
Mri scan of lower spinal canal without contrast17$2,170$128
Ultrasound of both sides of head and neck blood flow13$1,753$135
X-ray of chest, 2 views, front and side16$157$10

Medicaid work

$562 in 2024

Medicaid paid $562 for 87 billed services this clinician did in 2024, up to 30 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Largest Medicaid services in 2024
Radiologic examination, chest; single view87$562
Medicaid work by year
202487130$562
202316116$123
202291129$673
2021436138$2,918
2020208233$1,336
2019454534$5,968
2018369430$6,356
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
Radiologic examination, chest; single view16$123

2022

Largest Medicaid services in 2022
Radiologic examination, chest; single view91$673

2021

Largest Medicaid services in 2021
Radiologic examination, chest; single view436$2,918

2020

Largest Medicaid services in 2020
Radiologic examination, chest; single view195$1,193
Radiologic examination, chest; 2 views13$143

2019

Largest Medicaid services in 2019
Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed122$2,737
SCREENING DIGITAL BREAST TOMOSYNTHESIS BI122$1,380
Radiologic examination, chest; single view162$1,211
Computed tomography, head or brain; without contrast material15$388
Radiologic examination, chest; 2 views33$253

2018

Largest Medicaid services in 2018
Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed139$3,616
SCREENING DIGITAL BREAST TOMOSYNTHESIS BI139$1,907
Radiologic examination, chest; single view53$439
Radiologic examination, chest; 2 views38$394

Money from drug and device companies

$15 in 2025

Industry payments by year
202511None$15
202211None$13
201922None$21

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
Hologic Sales and Service3dimensions$15
1 payment
  • Meals for 3dimensions · 2025-01-16 · $15
See the published payment
Every published payment
Hologic Sales and ServiceMeals · 2025-01-163dimensions$15
See earlier years (2022, 2019)

2022: $13

Payments by company in 2022
IncyteJakafi$13
1 payment
  • Meals for Jakafi · 2022-09-09 · $13

2019: $21

Payments by company in 2019
Leica MicrosystemsN/A$11
1 payment
  • Education for N/A · 2019-05-22 · $11
Focal TherapeuticsLocalizer$10
1 payment
  • Meals for Localizer · 2019-09-04 · $10

Professional record

NPI
1548459340
Licence
AZ 269074, CA 20A14319, MA 269074, NV DO1774, NY 246397
Trained
New York College of Osteo Medicine of New York Institute of Technology, 2006
Group
Stanford Health Care · Bay Imaging Consultants Medical Group Inc · John Muir Trauma Physicians Billing Service · John Muir Magnetic Imaging Center
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Diagnostic radiology (2085R0202X); Family medicine (207Q00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2007-10-17
NPI last updated
2024-04-09
NPI record certified
2024-04-09

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 55 Fruit St, Boston, MA, 02114 · 3161 L St, Sacramento, CA, 95816 · 101 Bodin Cir, Travis Afb, CA, 94535