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Iris C Gibbs, MD

Radiation Oncology · Pleasanton

NPI 1407994429

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
17
3 carriers
Offices
2
Since medical school
31 years
Stanford University School of Medicine, 1995

Offices

2 locations · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

Plans that list them

17 plans · 3 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Gibbs’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

17 of 17 plans

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Silicon (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health smartHMO (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health the ONE (HMO)Alignment Health PlanListedOct 3, 2026
SCAN Balance (HMO C-SNP)SCAN Health PlanListedOct 3, 2026
SCAN Classic (HMO)SCAN Health PlanListedOct 3, 2026
SCAN MyChoice (HMO)SCAN Health PlanListedOct 3, 2026
SCAN Strive (HMO C-SNP)SCAN Health PlanListedOct 3, 2026
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A61589 · Current

Licensed to practise in California · since 1997 · expires 2028-09-30 · Stanford University School of Medicine.

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 Radiology - Radiation Oncology

Hospitals they work in

1 hospital

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

  • 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
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%

Original Medicare doctor bills

$21,600

Medicare paid this office $21,600 for 41 people.

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

Largest Original Medicare bills
Design and construction of complex radiation treatment device11$2,280$56
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy14$544$16

Who their Medicare patients are

41 Original Medicare patients in 2024. Average age 69 · Women 51% · Also on Medicaid 34% · Health risk score 2.69. Sicker patients than 9 in 10 peers; the typical radiation oncology clinician is at 1.69.

Conditions among them: High blood pressure 75% · Cancer 51% · Diabetes 37% · Chronic kidney disease 34% · Depression 29% · Coronary heart disease 27% · Stroke 27%.

The office billed $278,337, Medicare allowed $27,358 and paid $21,600; for 286 services of 23 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
202441286692.69$278,337$21,600
202376221731.93$193,192$15,094
202262253741.64$219,093$19,378
202178369741.92$334,308$29,382
202077505721.75$517,869$40,915
201995386721.81$248,445$27,061
201877278731.87$136,913$20,411
201794536731.58$262,133$37,563
201669507701.51$268,962$36,193
201556229701.85$112,282$16,138
20141171,276711.81$807,090$98,204
20131201,295711.82$788,981$96,704

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
Ct guidance for insertion of radiation therapy fields33$2,135$43
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy25$859$20

2022: 2 services

Original Medicare services billed in 2022
Ct guidance for insertion of radiation therapy fields26$2,150$41
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy12$788$19

2021: 8 services

Original Medicare services billed in 2021
Calculation of radiation therapy dose12$3,298$31
3d radiation therapy planning11$2,358$214
Design and construction of complex radiation treatment device14$2,357$57
Complex radiation therapy planning13$2,061$159
Return visit (30+ min)19$2,041$89
Ct guidance for insertion of radiation therapy fields13$1,667$43
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy17$921$20
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved11$859$78

2020: 11 services

Original Medicare services billed in 2020
Calculation of radiation therapy dose20$5,796$31
3d radiation therapy planning19$4,333$217
Complex radiation therapy planning21$3,519$160
Design and construction of complex radiation treatment device20$3,320$58
Special radiation treatment19$2,058$103
Return visit (30+ min)18$1,587$72
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved18$1,507$79
Ct guidance for insertion of radiation therapy fields15$1,392$44
Long return visit (40+ min)13$1,275$98
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area20$720$34
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy18$692$20

2019: 9 services

Original Medicare services billed in 2019
Calculation of radiation therapy dose12$3,167$30
Return visit (30+ min)29$2,440$68
3d radiation therapy planning11$2,312$210
Ct guidance for insertion of radiation therapy fields29$1,996$37
Complex radiation therapy planning11$1,858$155
Design and construction of complex radiation treatment device13$1,750$56
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved12$993$76
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy25$985$18
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area12$419$35

2018: 3 services

Original Medicare services billed in 2018
Return visit (30+ min)29$2,751$69
Ct guidance for insertion of radiation therapy fields12$852$41
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy15$447$19

2017: 12 services

Original Medicare services billed in 2017
Calculation of radiation therapy dose18$4,403$30
Complex radiation therapy planning21$3,189$145
3d radiation therapy planning15$3,035$202
New patient visit (60+ min)21$3,013$143
Design and construction of complex radiation treatment device20$2,336$54
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy31$1,953$19
Special radiation treatment19$1,922$96
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved19$1,405$74
Ct guidance for insertion of radiation therapy fields15$1,284$40
Return visit (30+ min)13$1,058$66
Short return visit (20+ min)20$873$42
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area17$563$33

2016: 10 services

Original Medicare services billed in 2016
Calculation of radiation therapy dose20$4,542$29
3d radiation therapy planning18$3,815$201
Design and construction of complex radiation treatment device20$3,312$58
Complex radiation therapy planning19$2,764$138
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved18$1,468$73
Special radiation treatment14$1,465$98
Return visit (30+ min)19$1,360$65
Short return visit (20+ min)27$1,313$41
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy16$1,310$18
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area16$1,013$33

2015: 4 services

Original Medicare services billed in 2015
Design and construction of complex radiation treatment device11$1,265$58
Short return visit (20+ min)35$1,260$32
Return visit (30+ min)12$890$64
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area11$454$32

2014: 14 services

Original Medicare services billed in 2014
Management of cranial lesion surgery using radiation over multiple sessions38$22,632$552
Calculation of radiation therapy dose49$12,133$28
3d radiation therapy planning44$9,480$193
Design and construction of complex radiation treatment device52$9,089$56
Complex radiation therapy planning47$7,375$139
Special radiation treatment45$4,847$95
New patient visit (60+ min)33$4,765$144
Radiation treatment management, 5 treatment sessions14$4,448$165
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area43$4,125$31
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved45$3,623$71
Return visit (30+ min)34$2,847$65
Short return visit (20+ min)50$2,557$42
Isodose radiation therapy plan, complex14$1,731$72
Long return visit (40+ min)14$1,480$93

2013: 13 services

Original Medicare services billed in 2013
Management of cranial lesion surgery using radiation over multiple sessions26$15,437$532
Calculation of radiation therapy dose54$13,698$27
3d radiation therapy planning51$11,273$201
Design and construction of complex radiation treatment device54$10,777$54
Complex radiation therapy planning53$7,865$131
Management of complete single session course of cranial lesion surgery using radiation21$7,772$353
New patient visit (60+ min)43$6,137$143
Special radiation treatment46$4,751$90
Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved53$4,039$68
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area39$3,031$31
Return visit (30+ min)32$2,525$65
Short return visit (20+ min)46$1,681$35
Long return visit (40+ min)15$1,525$95

Drugs they prescribed that Part D paid

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

Opioids were 0% of their 21 Part D prescriptions in 2016. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

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

Year by year

Part D prescribing by year
201621None0% (0)0%$404
201513None0% (0)None$1,443
201413None0% (0)None$837
201312NoneNone0%$166

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

Money from drug and device companies

$9,891 in 2022

Industry payments by year
2022228$7,500$9,891
202022None$183
201911None$6,700

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
AccurayCyberknife System$9,837
27 payments
  • Travel for Cyberknife System · 2022-09-29 · $141
  • Honoraria for Cyberknife System · 2022-09-06 · $7,500
  • Travel for Cyberknife System · 2022-08-28 · $104
  • Meals for Cyberknife System · 2022-08-27 · $20
  • Travel for Cyberknife System · 2022-08-27 · $4
  • Travel for Cyberknife System · 2022-08-27 · $2
  • Travel for Cyberknife System · 2022-08-27 · $7
  • Travel for Cyberknife System · 2022-08-27 · $5
  • Meals for Cyberknife System · 2022-08-27 · $21
  • Meals for Cyberknife System · 2022-08-27 · $4
  • Travel for Cyberknife System · 2022-08-27 · $29
  • Travel for Cyberknife System · 2022-08-27 · $27
  • Meals for Cyberknife System · 2022-08-27 · $3
  • Meals for Cyberknife System · 2022-08-27 · $9
  • Meals for Cyberknife System · 2022-08-27 · $4
  • Meals for Cyberknife System · 2022-08-27 · $7
  • Travel for Cyberknife System · 2022-08-26 · $551
  • Travel for Cyberknife System · 2022-08-26 · $14
  • Travel for Cyberknife System · 2022-08-26 · $55
  • Meals for Cyberknife System · 2022-08-25 · $3
  • Meals for Cyberknife System · 2022-08-25 · $2
  • Travel for Cyberknife System · 2022-08-23 · $104
  • Meals for Cyberknife System · 2022-08-19 · $134
  • Travel for Cyberknife System · 2022-08-10 · $27
  • Travel for Cyberknife System · 2022-08-08 · $337
  • Travel for Cyberknife System · 2022-08-03 · $341
  • Travel for Cyberknife System · 2022-08-03 · $381
Zap Surgical SystemsZap-X Mv Imager$54
1 payment
  • Meals for Zap-X Mv Imager · 2022-03-08 · $54
See all 28 published payments
Every published payment
AccurayTravel · 2022-09-29Cyberknife System$141
AccurayHonoraria · 2022-09-06Cyberknife System$7,500
AccurayTravel · 2022-08-28Cyberknife System$104
AccurayMeals · 2022-08-27Cyberknife System$20
AccurayTravel · 2022-08-27Cyberknife System$4
AccurayTravel · 2022-08-27Cyberknife System$2
AccurayTravel · 2022-08-27Cyberknife System$7
AccurayTravel · 2022-08-27Cyberknife System$5
AccurayMeals · 2022-08-27Cyberknife System$21
AccurayMeals · 2022-08-27Cyberknife System$4
AccurayTravel · 2022-08-27Cyberknife System$29
AccurayTravel · 2022-08-27Cyberknife System$27
AccurayMeals · 2022-08-27Cyberknife System$3
AccurayMeals · 2022-08-27Cyberknife System$9
AccurayMeals · 2022-08-27Cyberknife System$4
AccurayMeals · 2022-08-27Cyberknife System$7
AccurayTravel · 2022-08-26Cyberknife System$551
AccurayTravel · 2022-08-26Cyberknife System$14
AccurayTravel · 2022-08-26Cyberknife System$55
AccurayMeals · 2022-08-25Cyberknife System$3
AccurayMeals · 2022-08-25Cyberknife System$2
AccurayTravel · 2022-08-23Cyberknife System$104
AccurayMeals · 2022-08-19Cyberknife System$134
AccurayTravel · 2022-08-10Cyberknife System$27
AccurayTravel · 2022-08-08Cyberknife System$337
AccurayTravel · 2022-08-03Cyberknife System$341
AccurayTravel · 2022-08-03Cyberknife System$381
Zap Surgical SystemsMeals · 2022-03-08Zap-X Mv Imager$54
See earlier years (2020, 2019)

2020: $183

Payments by company in 2020
Baxter HealthcareFloseal$122
1 payment
  • Meals for Floseal · 2020-02-24 · $122
Varian Medical SystemsRadiation Oncology$61
1 payment
  • Meals for Radiation Oncology · 2020-02-22 · $61

2019: $6,700

Payments by company in 2019
AccurayCyberknife System$6,700
1 payment
  • Travel for Cyberknife System · 2019-06-07 · $6,700

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1407994429
Licence
CA A61589California A61589: Current · expires 2028-09-30
Trained
Stanford University School of Medicine, 1995 · 31 years ago
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Medicaid ID
CA 00A615890
Taxonomy
Federal specialty code 2085R0001X (2085R0001X); Federal specialty code 2085R0203X (2085R0203X)
Mailing address
875 Blake Wilbur Drive, Room G222a, Stanford, CA, 94305
NPI first listed
2007-02-02
NPI last updated
2013-12-12

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