Irene L Wapnir, MD

Offices

1 location · 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. Wapnir’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

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Plans whose provider directory lists this clinician

Alignment Health BreathEasy (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Clarity (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Harmony (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)	Alignment Health Plan	Listed	Sep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)	Alignment Health Plan	Listed	Sep 28, 2026
Alignment Health Honor+ Plan (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health My Choice CalCare (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Silicon (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health smartHMO (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health the ONE (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
SCAN Balance (HMO C-SNP)	SCAN Health Plan	Listed	Oct 3, 2026
SCAN Classic (HMO)	SCAN Health Plan	Listed	Oct 3, 2026
SCAN MyChoice (HMO)	SCAN Health Plan	Listed	Oct 3, 2026
SCAN Strive (HMO C-SNP)	SCAN Health Plan	Listed	Oct 3, 2026
DualConnect (HMO D-SNP)	Santa Clara Family Health Plan	Listed	Sep 1, 2026

California Medical Board record

Licence C50558 · Current

Licensed to practise in California · since 2001 · expires 2028-05-31 · Autonomous Metropolitan University of Xochimilco.

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

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.

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Every scored measure at Stanford Health Care

Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	5.31 (4.24 to 6.37) · 8,661 cases	Worse	Jul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits	14.1 (12.7 to 15.7) · 2,191 cases	Worse	Jan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths	4.08 (1.95 to 6.21) · 5,296 cases	Better	Jul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.317	Better	Oct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections	0.446	Better	Oct 2024 – Sep 2025
SSI - Colon SurgeryInfections	0.241	Better	Oct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits	0.7 (0.6 to 0.9) · 3,348 cases	Better	Jan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.06 (0.45 to 1.67) · 5,374 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	0.86 (0.72 to 1)	No different	Jul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths	166.09 (137.88 to 194.3) · 470 cases	No different	Jul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths	1.1 · 192 cases	None	Jul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths	6.4 · 146 cases	None	Jul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths	9.7 · 253 cases	None	Jul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths	6.3 · 880 cases	None	Jul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths	10.3 · 935 cases	None	Jul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths	8.7 · 501 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	2.1 · 7,730 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.13 (0 to 0.27) · 20,799 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.28 (0.14 to 0.43) · 23,182 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	0.94 (0.2 to 1.68) · 5,694 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.36 (1.54 to 3.19) · 7,846 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	5.2 (3.76 to 6.64) · 5,603 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.38 (0.23 to 2.53) · 2,211 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.52 (0.21 to 0.83) · 19,915 cases	No different	Jul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths	3.6 · 416 cases	None	Apr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	0.869	No different	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.857	No different	Oct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections	0.368	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	16.2 · 247 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	20.5 · 1,021 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits	47.8 · 258 cases	None	Jul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	-1.6 · 990 cases	None	Jul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits	20.8 · 976 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	16.5 · 959 cases	None	Jul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits	5.2 (4.4 to 6.2) · 2,191 cases	No different	Jan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits	5.1 · 425 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	9.6 · 158 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	19.6 · 183 cases	None	Jul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits	12.7 (10.4 to 15.4) · 4,578 cases	No different	Jan 2022 – Dec 2024

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

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Patient survey stars by topic at Stanford Health Care

Cleanliness	4
Nurse communication	4
Doctor communication	4
Communication about medicines	3
Discharge information	4
Overall hospital rating	4
Quietness	2
Recommend hospital	5

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Share of patients giving the best answer at Stanford Health Care

Room was "always" clean	75%
Nurses "always" communicated well	82%
Doctors "always" communicated well	81%
Staff "always" explained	63%
Yes, staff "did" give patients this information	89%
Yes, staff "did" give patients information about help after discharge	89%
Doctors "always" explained things so they could understand	76%
Doctors "always" listened carefully	80%
Doctors "always" treated them with courtesy and respect	87%
Patients who gave a rating of "9" or "10" (high)	79%
Staff "always" explained new medications	76%
Nurses "always" explained things so they could understand	77%
Nurses "always" listened carefully	79%
Nurses "always" treated them with courtesy and respect	88%
"Always" quiet at night	53%
"YES", patients would definitely recommend the hospital	83%
Staff "always" explained possible side effects	50%
Yes, staff "did" give patients information about possible symptoms	90%

Original Medicare doctor bills

$51,118

Medicare paid this office $51,118 for 93 people.

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

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Largest Original Medicare bills

Partial removal of breast	33	$23,921	$598
Biopsy or removal of deep lymph nodes of underarm	12	$2,597	$216
New patient visit (60+ min)	13	$2,120	$163
New patient visit (45+ min)	16	$1,674	$105
Imaging of lymph nodes during surgery	15	$1,564	$104

See all 6 services

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Every Original Medicare service billed

Partial removal of breast	33	$23,921	$598
Biopsy or removal of deep lymph nodes of underarm	12	$2,597	$216
New patient visit (60+ min)	13	$2,120	$163
New patient visit (45+ min)	16	$1,674	$105
Imaging of lymph nodes during surgery	15	$1,564	$104
Short return visit (20+ min)	28	$1,542	$51

Procedures Medicare counted

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Procedure volume Medicare published

Mastectomy	47	More than 94% of doctors who do this
Skin biopsy	1-10	None

Who their Medicare patients are

93 Original Medicare patients in 2024. Average age 72 · Also on Medicaid 25% · Health risk score 1.19. At or below the middle of the specialty; the typical general surgery clinician is at 1.69.

Conditions among them: Cancer 75% · High blood pressure 58% · Depression 23% · Diabetes 20% · Coronary heart disease 19% · Atrial fibrillation 13%.

The office billed $238,531, Medicare allowed $64,937 and paid $51,118; for 201 services of 22 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

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Original Medicare by year

2024	93	201	72	1.19	$238,531	$51,118
2023	111	226	72	1.04	$242,353	$56,959
2022	112	212	73	1.19	$194,317	$45,395
2021	152	322	72	1.17	$293,189	$63,963
2020	160	287	72	1.12	$272,746	$53,873
2019	145	263	73	1.10	$230,606	$51,926
2018	176	368	72	1.06	$279,488	$64,727
2017	122	278	71	1.03	$264,639	$57,864
2016	162	321	70	1.03	$329,834	$65,295
2015	146	298	71	1.15	$293,313	$53,434
2014	150	301	71	0.98	$344,241	$58,504
2013	132	276	70	1.05	$197,946	$42,564

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: 6 services

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Original Medicare services billed in 2023

Partial removal of breast	39	$26,912	$612
Biopsy or removal of deep lymph nodes of underarm	22	$5,563	$253
New patient visit (60+ min)	29	$4,843	$167
Imaging of lymph nodes during surgery	22	$2,640	$120
Return visit (30+ min)	22	$1,716	$69
Short return visit (20+ min)	26	$1,467	$51

2022: 8 services

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Original Medicare services billed in 2022

Partial removal of breast	31	$22,090	$631
Biopsy or removal of deep lymph nodes of underarm	19	$4,212	$222
New patient visit (60+ min)	20	$2,979	$149
Return visit (30+ min)	28	$2,522	$84
Imaging of lymph nodes during surgery	18	$2,173	$121
Short return visit (20+ min)	37	$2,163	$53
New patient visit (45+ min)	13	$1,618	$124
Short return visit	13	$407	$29

2021: 8 services

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Original Medicare services billed in 2021

Partial removal of breast	39	$26,938	$612
Biopsy or removal of deep lymph nodes of underarm	28	$5,884	$210
New patient visit (60+ min)	34	$5,271	$155
Imaging of lymph nodes during surgery	27	$3,285	$122
Short return visit (20+ min)	45	$2,675	$56
New patient visit (45+ min)	19	$2,401	$126
Return visit (30+ min)	24	$2,286	$88
Short return visit	27	$928	$28

2020: 8 services

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Original Medicare services billed in 2020

Partial removal of breast	33	$20,636	$607
New patient visit (60+ min)	38	$5,534	$146
Biopsy or removal of deep lymph nodes of underarm	22	$5,449	$248
Short return visit (20+ min)	69	$2,937	$43
Imaging of lymph nodes during surgery	20	$2,529	$126
New patient visit (45+ min)	17	$1,915	$113
Short return visit	18	$476	$24
Office for the evaluation and management of established patient that may not require presence of healthcare professional	11	$87	$8

2019: 6 services

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Original Medicare services billed in 2019

Partial removal of breast	33	$22,495	$592
New patient visit (60+ min)	36	$5,483	$152
Biopsy or removal of deep lymph nodes of underarm	18	$4,382	$243
Short return visit (20+ min)	67	$3,112	$41
Imaging of lymph nodes during surgery	17	$2,211	$130
Short return visit	23	$670	$22

2018: 8 services

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Original Medicare services billed in 2018

Partial removal of breast	37	$21,701	$556
New patient visit (60+ min)	55	$8,278	$151
Biopsy or removal of deep lymph nodes of underarm	27	$6,458	$239
Short return visit (20+ min)	76	$3,509	$42
Imaging of lymph nodes during surgery	28	$3,284	$117
New patient visit (45+ min)	14	$1,614	$115
Long return visit (40+ min)	12	$1,127	$94
Short return visit	21	$706	$23

2017: 5 services

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Original Medicare services billed in 2017

Partial removal of breast	36	$21,752	$572
Biopsy or removal of deep lymph nodes of underarm	30	$6,348	$212
New patient visit (60+ min)	31	$4,637	$150
Imaging of lymph nodes during surgery	30	$3,651	$118
Short return visit (20+ min)	67	$2,670	$38

2016: 7 services

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Original Medicare services billed in 2016

Partial removal of breast	32	$20,592	$557
Simple complete removal of breast	12	$11,980	$998
New patient visit (60+ min)	44	$6,458	$147
Biopsy or removal of deep lymph nodes of underarm	22	$4,815	$219
Short return visit (20+ min)	80	$3,585	$39
Imaging of lymph nodes during surgery	22	$2,503	$114
New patient visit (45+ min)	12	$1,269	$106

2015: 7 services

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Original Medicare services billed in 2015

Partial removal of breast	33	$20,278	$563
Biopsy or removal of deep lymph nodes of underarm	20	$4,385	$209
New patient visit (60+ min)	29	$4,232	$146
Imaging of lymph nodes during surgery	28	$3,589	$120
Short return visit (20+ min)	70	$3,310	$40
New patient visit (45+ min)	16	$1,790	$112
Short return visit	22	$500	$19

2014: 7 services

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Original Medicare services billed in 2014

Partial removal of breast	26	$15,548	$555
New patient visit (60+ min)	44	$6,466	$147
Biopsy or removal of deep lymph nodes of underarm	19	$3,685	$194
Short return visit (20+ min)	76	$3,412	$42
Imaging of lymph nodes during surgery	27	$3,287	$117
New patient visit (45+ min)	12	$1,188	$99
Return visit (30+ min)	13	$920	$66

2013: 9 services

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Original Medicare services billed in 2013

Partial removal of breast	20	$13,340	$556
New patient visit (60+ min)	30	$4,344	$145
Short return visit (20+ min)	55	$2,438	$44
Biopsy or removal of deep lymph nodes of underarm	11	$2,333	$212
New patient visit (60+ min)	12	$2,122	$177
Imaging of lymph nodes during surgery	12	$1,380	$115
New patient visit (45+ min)	11	$1,238	$113
Return visit (30+ min)	14	$1,218	$68
Short return visit (20+ min)	23	$1,047	$46

Money from drug and device companies

$1,570 in 2025

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Industry payments by year

2025	3	13	None	$1,570
2024	2	2	$150	$254
2022	2	4	None	$1,741
2021	1	2	$450	$450
2020	2	2	$1,100	$1,100
2019	3	8	$2,067	$2,097

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

A payment is not proof that care is biased.

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Payments by company

Axogen	None	$1,282	6 payments Travel · 2025-09-21 · $69 Travel · 2025-09-21 · $361 Travel · 2025-09-21 · $54 Travel · 2025-09-21 · $362 Meals · 2025-09-21 · $287 Meals · 2025-09-21 · $150
Abbvie	Natrelle Saline-Filled Breast Implants	$147	1 payment Meals for Natrelle Saline-Filled Breast Implants · 2025-12-16 · $147
Gilead Sciences	Trodelvy	$141	1 payment Meals for Trodelvy · 2025-08-22 · $141

See all 8 published payments

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Every published payment

Abbvie	Meals · 2025-12-16	Natrelle Saline-Filled Breast Implants	$147
Axogen	Travel · 2025-09-21	None	$69
Axogen	Travel · 2025-09-21	None	$361
Axogen	Travel · 2025-09-21	None	$54
Axogen	Travel · 2025-09-21	None	$362
Axogen	Meals · 2025-09-21	None	$287
Axogen	Meals · 2025-09-21	None	$150
Gilead Sciences	Meals · 2025-08-22	Trodelvy	$141

See earlier years (2024, 2022, 2021, 2020, 2019)

2024: $254

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Payments by company in 2024

Vector Surgical	Marginmarker	$150	1 payment Consulting for Marginmarker · 2024-01-01 · $150
Intuitive Surgical	Da Vinci Surgical System	$104	1 payment Meals for Da Vinci Surgical System · 2024-04-16 · $104

2022: $1,741

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Payments by company in 2022

Genentech	None	$1,605	3 payments Travel · 2022-07-23 · $885 Meals · 2022-07-23 · $420 Travel · 2022-07-23 · $300
Sientra	Sientra High Strength Cohesive Silicone Gel Breast Implant	$136	1 payment Meals for Sientra High Strength Cohesive Silicone Gel Breast Implant · 2022-12-15 · $136

2021: $450

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Payments by company in 2021

Vector Surgical	Marginmarker	$450	2 payments Consulting for Marginmarker · 2021-07-14 · $300 Consulting for Marginmarker · 2021-03-08 · $150

2020: $1,100

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Payments by company in 2020

GI Supply	None	$800	1 payment Honoraria · 2020-10-13 · $800
Vector Surgical	Marginmarker	$300	1 payment Consulting for Marginmarker · 2020-07-28 · $300

2019: $2,097

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Payments by company in 2019

F. Hoffmann-La Roche AG	Kadcyla	$1,167	4 payments Paid to speak or teach for Kadcyla · 2019-12-31 · $514 Paid to speak or teach for Kadcyla · 2019-09-30 · $523 Paid to speak or teach for Kadcyla · 2019-09-30 · $52 Paid to speak or teach for Kadcyla · 2019-06-30 · $78
Vector Surgical	Marginmarker	$900	2 payments Consulting for Marginmarker · 2019-11-05 · $300 Consulting for Marginmarker · 2019-05-14 · $600
Medtronic USA	Aquamantys	$30	2 payments Meals for Aquamantys · 2019-02-21 · $15 Meals for Aquamantys · 2019-01-16 · $15

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

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Research payments by company and study

Genentech, Inc. · Single Agent Gdc 9545 Vs Endocrine Monotherapy Adjuvant Treatment in Hr Ebc · 2023	Their institution	$28,743
Genentech, Inc. · Single Agent Gdc 9545 Vs Endocrine Monotherapy Adjuvant Treatment in Hr Ebc · 2024	Their institution	$4,160
F. Hoffmann-La Roche AG · T Dm1 High Risk Ebc Pts With Residual Inv Disease · 2024	This clinician	$2,160
F. Hoffmann-La Roche AG · A Randomized, Multicenter, Open-Label Phase III Study To Evaluate Efficacy and Safety of Trastuzumab Emtansine Vs Trastuzumab As Adjuvant Therapy for Patients With Her2 Primary Breast Cancer With Residual Tumor Present Pathologically in Breast Or Axillary Lymph Nodes Following Preoperative Therapy · 2020	This clinician	$1,071
F. Hoffmann-La Roche AG · A Randomized, Multicenter, Open-Label Phase III Study To Evaluate Efficacy and Safety of Trastuzumab Emtansine Vs Trastuzumab As Adjuvant Therapy for Patients With Her2 Primary Breast Cancer With Residual Tumor Present Pathologically in Breast Or Axillary Lymph Nodes Following Preoperative Therapy · 2021	This clinician	$572

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: 1104951508
Licence: CA C50558California C50558: Current · expires 2028-05-31
Group: Stanford Health Care
Video visits: Lists video visits
Gender: Female

More record details

Sole proprietor: Yes
Medicaid ID: CA 00C505580
Taxonomy: Surgery (208600000X); Surgical oncology (2086X0206X)
Mailing address: 300 Pasteur Dr, Palo Alto, CA, 94304
NPI first listed: 2007-02-23
NPI last updated: 2024-04-29
NPI record certified: 2024-04-29

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