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Seth Blumberg, MD

Hospitalist · San Francisco

NPI 1255595443

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
3
1 carrier
Office
1
Since medical school
18 years
University of Michigan Medical School, 2008

Offices

1 location · Regents of the University of California · 706 clinicians in this group

Looking this up.

Hospitals listed: UCSF Health Stanyan Hospital · UCSF Medical Center. That is not proof they admit you there this week.

Plans that list them

3 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Blumberg’s office at (415) 476-4029 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

Plans whose provider directory lists this clinician
Imperial Courage Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Dynamic Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Senior Value (HMO C-SNP)Imperial Health Plan of California, Inc.ListedSep 1, 2026

California Medical Board record

Licence A112063 · Current

Licensed to practise in California · since 2010 · expires 2027-11-30 · University of Michigan Medical School.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

School, training and certification

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

  • American Board of Internal Medicine - Infectious Disease
  • American Board of Internal Medicine - Internal Medicine

Hospitals they work in

2 hospitals

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

  • UCSF Health St. Mary'S HospitalSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of CommonSpirit Health, which runs 145 hospitals in 19 statesPatients rate it 2 of 5 · 60% would definitely recommend it
    Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0, Oct 2024 – Sep 2025
  • UCSF Medical CenterSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UCSF Helen Diller Family Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 81% would definitely recommend it
    Overall rating: 4 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 4.9 (3.79 to 6.02) · 7,590 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.8 (11.3 to 14.4) · 2,019 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 139.4 (110.22 to 168.58) · 452 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.622, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.626, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.491, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,336 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for UCSF Health St. Mary'S Hospital

Behind the star rating — Deaths: 2 better, 5 the same, 0 worse of 7 measures. Safety: 1 better, 5 the same, 0 worse of 6 measures. Readmissions: 0 better, 9 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 UCSF Health St. Mary'S Hospital
Clostridium Difficile (C.Diff)Infections0BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.95 (0 to 1.99) · 413 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.96 (0.58 to 1.34)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths146.74 (92.54 to 200.93) · 30 casesNo differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths7.4 · 35 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths11.8 · 51 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.6 · 220 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths9.3 · 165 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.4 · 102 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.9 · 1,363 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.24 (0.02 to 0.46) · 2,530 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.32 (0.12 to 0.53) · 2,519 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.02 (0.73 to 5.31) · 590 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.63 (0 to 3.35) · 238 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.07 (0.43 to 3.7) · 554 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths12.7 (4.19 to 21.21) · 259 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.67 (1.51 to 9.83) · 203 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.7 (0.19 to 3.2) · 168 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.21 (0 to 0.99) · 2,258 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.2 · 158 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0No differentOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.6 · 61 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits21.1 · 291 casesNoneJul 2023 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-3.4 · 251 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits5.5 · 189 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.1 · 213 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (3.7 to 8.5) · 30 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12 (8.3 to 17.1) · 30 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits4.5 · 176 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.3 · 61 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.1 (9.6 to 17.8) · 192 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.7 to 1.5) · 113 casesNo differentJan 2024 – Dec 2024

What patients said (587 patients answered, 20% of those asked)

Patient survey stars by topic at UCSF Health St. Mary'S Hospital
Cleanliness3
Nurse communication2
Doctor communication2
Communication about medicines2
Discharge information4
Overall hospital rating2
Quietness1
Recommend hospital2
Share of patients giving the best answer at UCSF Health St. Mary'S Hospital
Room was "always" clean66%
Nurses "always" communicated well73%
Doctors "always" communicated well76%
Staff "always" explained60%
Yes, staff "did" give patients this information87%
Yes, staff "did" give patients information about help after discharge86%
Doctors "always" explained things so they could understand71%
Doctors "always" listened carefully76%
Doctors "always" treated them with courtesy and respect82%
Patients who gave a rating of "9" or "10" (high)58%
Staff "always" explained new medications73%
Nurses "always" explained things so they could understand70%
Nurses "always" listened carefully72%
Nurses "always" treated them with courtesy and respect78%
"Always" quiet at night41%
"YES", patients would definitely recommend the hospital60%
Staff "always" explained possible side effects48%
Yes, staff "did" give patients information about possible symptoms88%
See every measure and the patient survey for UCSF Medical Center

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: 3 better, 5 the same, 3 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 UCSF Medical Center
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.9 (3.79 to 6.02) · 7,590 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.8 (11.3 to 14.4) · 2,019 casesWorseJan 2024 – Dec 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths139.4 (110.22 to 168.58) · 452 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.622BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.626BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.491BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.8 (0.7 to 1) · 2,336 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.58 to 1.9) · 4,689 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.05 (0.89 to 1.2)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.9 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.5 · 85 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.1 · 132 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.6 · 454 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 618 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 380 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.7 · 5,000 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.06 to 0.38) · 15,965 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.05 to 0.35) · 17,859 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.85 (0 to 1.83) · 4,184 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2 (1.1 to 2.9) · 6,516 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.35 (4.49 to 10.21) · 3,989 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5 (3.22 to 6.77) · 4,087 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.95 (0.74 to 3.15) · 2,034 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.95 (0.63 to 1.28) · 15,431 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 399 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.899No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.689No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.224No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 156 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20 · 564 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits60.3 · 160 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-9.7 · 550 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits44.1 · 660 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.8 · 667 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (4.8 to 6.7) · 2,019 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6 · 421 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.5 · 53 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 107 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.9 (11.3 to 17.1) · 3,247 casesNo differentJan 2022 – Dec 2024

What patients said (3,181 patients answered, 25% of those asked)

Patient survey stars by topic at UCSF Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at UCSF Medical Center
Room was "always" clean71%
Nurses "always" communicated well80%
Doctors "always" communicated well80%
Staff "always" explained61%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge87%
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)76%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully78%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night50%
"YES", patients would definitely recommend the hospital81%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$19,496

Medicare paid this office $19,496 for 87 people.

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

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes34$7,865$105
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes29$3,414$70
Initial hospital care with moderate level of medical decision making at least 75 minutes21$3,066$146
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes21$2,430$116
Hospital discharge day management, more than 30 minutes23$2,377$103

Who their Medicare patients are

87 Original Medicare patients in 2024. Average age 79 · 85 and older 36% · Women 49% · Also on Medicaid 57% · Health risk score 2.97. Above the middle of the specialty; the typical hospitalist clinician is at 2.49.

Conditions among them: High blood pressure 75% · Chronic kidney disease 54% · Diabetes 48% · Heart failure 47% · Coronary heart disease 44% · Atrial fibrillation 44% · Depression 40% · Dementia 39% · Stroke 30% · COPD 29% · Cancer 18%.

The office billed $115,394, Medicare allowed $24,446 and paid $19,496; for 196 services of 9 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
202487196792.97$115,394$19,496
20235681792.33$44,413$7,604
202264120792.48$70,466$11,592
202181223783.44$120,492$19,457
202091200782.77$106,228$18,700

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: 2 services

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes22$2,284$71
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes15$1,932$107

2022: 2 services

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes23$5,247$90
Initial hospital care with moderate level of medical decision making at least 75 minutes15$2,624$175

2021: 4 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes48$11,875$87
Initial hospital care with moderate level of medical decision making at least 75 minutes16$2,864$179
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes16$1,643$53
Hospital discharge day management, 30 minutes or less17$1,050$62

2020: 6 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes42$7,769$94
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes30$3,401$65
Initial hospital care with moderate level of medical decision making at least 75 minutes18$3,261$181
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes11$1,357$123
Hospital discharge day management, 30 minutes or less18$1,199$67
Hospital discharge day management, more than 30 minutes11$1,078$98

Drugs they prescribed that Part D paid

$1,672

Pharmacies billed $1,672 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

42 generic and fewer than 11 brand-name prescriptions · $1,672 in drug cost.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Year by year

Part D prescribing by year
20244721NoneNone$1,672
202219NoneNoneNone$1,686
20213014NoneNone$2,580
20205125None24%$3,173
201680220% (0)None$10,986
2015137200% (0)28%$7,391

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2015: 3 drugs

Part D drugs prescribed in 2015
Atorvastatin14$99$7
Metformin17$88$5
Amlodipine Besylate11$52$5

Professional record

NPI
1255595443
Licence
CA AFE112063California A112063: Current · expires 2027-11-30
Trained
University of Michigan Medical School, 2008 · 18 years ago
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Hospitalist (208M00000X); Internal medicine (207R00000X)
Mailing address
505 Parnassus Ave, San Francisco, CA, 94143
NPI first listed
2008-07-16
NPI last updated
2022-02-24
NPI record certified
2022-02-24

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