Runi Chattopadhyay, MD

Offices

7 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group

Looking this up.

Hospitals listed: Mills-Peninsula Medical Center. That is not proof they admit you there this week.

Plans that list them

2 plans · 2 carriers

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

2 of 2 plans

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Plans whose provider directory lists this clinician

Alignment Health Sutter Advantage +More (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
DualConnect (HMO D-SNP)	Santa Clara Family Health Plan	Listed	Sep 1, 2026

California Medical Board record

Licence A91895 · Current

Licensed to practise in California · since 2005 · expires 2027-05-31 · Mcgill University Faculty of Medicine.

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.

Peninsula Medical CenterBurlingame, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 4 of 5 · 78% would definitely recommend it
Overall rating: 5 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.139, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.242, Oct 2024 – Sep 2025

See every measure and the patient survey for Peninsula Medical Center

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: 0 better, 10 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.

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Every scored measure at Peninsula Medical Center

Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.139	Better	Oct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections	0.242	Better	Oct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.21 (0.27 to 2.15) · 1,258 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	0.81 (0.51 to 1.1)	No different	Jul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths	155.44 (112.67 to 198.21) · 90 cases	No different	Jul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths	2.5 · 32 cases	None	Jul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths	7.1 · 82 cases	None	Jul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths	10 · 188 cases	None	Jul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths	9 · 473 cases	None	Jul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths	14.8 · 342 cases	None	Jul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths	9.4 · 485 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	2.9 · 3,730 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.2 (0 to 0.4) · 6,904 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.21 (0.02 to 0.4) · 7,052 cases	No different	Jul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	3.41 (1.43 to 5.39) · 1,695 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	1.72 (0.17 to 3.28) · 665 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.11 (0.66 to 3.56) · 1,545 cases	No different	Jul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths	7.1 (1.3 to 12.9) · 670 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	5.96 (2.63 to 9.29) · 653 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.61 (0.15 to 3.08) · 418 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.14 (0 to 0.78) · 5,539 cases	No different	Jul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths	3.7 · 192 cases	None	Apr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	0.215	No different	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.263	No different	Oct 2024 – Sep 2025
SSI - Colon SurgeryInfections	0.74	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	14.3 · 300 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	19 · 702 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits	1.2 · 207 cases	None	Jul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	-13.6 · 531 cases	None	Jul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits	24.3 · 343 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	18.1 · 449 cases	None	Jul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits	4.5 (2.8 to 7) · 85 cases	No different	Jan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits	9.6 (6.7 to 13.7) · 85 cases	No different	Jan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits	5.7 · 189 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	11 · 45 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	20.6 · 117 cases	None	Jul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits	13 (9.7 to 17.2) · 584 cases	No different	Jan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits	0.9 (0.7 to 1.2) · 764 cases	No different	Jan 2024 – Dec 2024

What patients said (523 patients answered, 27% of those asked)

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Patient survey stars by topic at Peninsula Medical Center

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

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Share of patients giving the best answer at Peninsula Medical Center

Room was "always" clean	76%
Nurses "always" communicated well	81%
Doctors "always" communicated well	80%
Staff "always" explained	58%
Yes, staff "did" give patients this information	89%
Yes, staff "did" give patients information about help after discharge	87%
Doctors "always" explained things so they could understand	74%
Doctors "always" listened carefully	79%
Doctors "always" treated them with courtesy and respect	87%
Patients who gave a rating of "9" or "10" (high)	75%
Staff "always" explained new medications	72%
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	54%
"YES", patients would definitely recommend the hospital	78%
Staff "always" explained possible side effects	44%
Yes, staff "did" give patients information about possible symptoms	90%

Original Medicare doctor bills

$83,898

Medicare paid this office $83,898 for 185 people.

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

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Largest Original Medicare bills

Long return visit (40+ min)	147	$32,761	$155
Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	28	$18,889	$590
Partial removal of breast	26	$10,549	$340
New patient visit (60+ min)	53	$10,344	$195
Biopsy or removal of deep lymph nodes of underarm	15	$3,095	$206

See all 6 services

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Every Original Medicare service billed

Long return visit (40+ min)	147	$32,761	$155
Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	28	$18,889	$590
Partial removal of breast	26	$10,549	$340
New patient visit (60+ min)	53	$10,344	$195
Biopsy or removal of deep lymph nodes of underarm	15	$3,095	$206
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	27	$918	$30

Procedures Medicare counted

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Procedure volume Medicare published

Mastectomy	65	More than 97% of doctors who do this
Melanoma (skin cancer) excision	47	More than 86% of doctors who do this

Who their Medicare patients are

185 Original Medicare patients in 2024. Average age 74 · Also on Medicaid 6% · Health risk score 0.82. At or below the middle of the specialty; the typical general surgery clinician is at 1.69.

Conditions among them: Cancer 72% · High blood pressure 48% · Diabetes 15% · Coronary heart disease 14% · Chronic kidney disease 14% · Depression 14% · Atrial fibrillation 7%.

The office billed $356,983, Medicare allowed $110,614 and paid $83,898; for 396 services of 12 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	185	396	74	0.82	$356,983	$83,898
2023	175	332	74	0.85	$275,233	$68,344
2022	182	475	74	0.69	$401,729	$101,230
2021	186	402	74	0.81	$352,937	$89,167
2020	177	364	74	0.87	$290,850	$72,566
2019	234	479	74	0.85	$397,143	$98,264
2018	213	416	74	0.80	$369,647	$83,751
2017	178	445	72	0.78	$379,819	$89,424
2016	191	337	73	0.91	$210,973	$51,463
2015	175	299	71	0.84	$212,922	$55,148
2014	142	312	71	0.64	$231,151	$55,198
2013	133	267	74	0.88	$211,425	$50,594

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: 7 services

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Original Medicare services billed in 2023

Long return visit (40+ min)	129	$26,358	$160
New patient visit (60+ min)	43	$8,447	$196
Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	13	$7,719	$551
Partial removal of breast	14	$5,502	$393
Biopsy or removal of deep lymph nodes of underarm	15	$3,119	$208
Return visit (30+ min)	17	$1,912	$101
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	24	$809	$30

2022: 10 services

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Original Medicare services billed in 2022

Long return visit (40+ min)	112	$23,898	$165
Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	26	$15,510	$597
Partial removal of breast	35	$13,749	$382
Simple complete removal of breast	13	$12,679	$975
New patient visit (60+ min)	50	$9,771	$195
Biopsy or removal of deep lymph nodes of underarm	28	$6,001	$214
Return visit (30+ min)	40	$5,940	$116
Imaging of lymph nodes during surgery	14	$1,713	$122
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	37	$1,249	$30
Office for the evaluation and management of established patient that may not require presence of healthcare professional	24	$664	$24

2021: 7 services

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Original Medicare services billed in 2021

Long return visit (40+ min)	110	$21,721	$160
Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	19	$13,767	$574
New patient visit (60+ min)	54	$11,120	$206
Partial removal of breast	24	$8,395	$323
Return visit (30+ min)	46	$6,273	$114
Biopsy or removal of deep lymph nodes of underarm	25	$5,360	$214
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	26	$835	$31

2020: 5 services

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Original Medicare services billed in 2020

Long return visit (40+ min)	133	$22,037	$127
Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	25	$17,813	$540
Partial removal of breast	31	$12,330	$374
New patient visit (60+ min)	28	$5,580	$199
Biopsy or removal of deep lymph nodes of underarm	15	$3,037	$202

2019: 8 services

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Original Medicare services billed in 2019

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	37	$21,873	$521
Long return visit (40+ min)	130	$21,292	$124
Partial removal of breast	40	$15,021	$334
New patient visit (60+ min)	44	$8,353	$190
Biopsy or removal of deep lymph nodes of underarm	23	$4,744	$206
New patient visit (45+ min)	16	$2,197	$137
New patient visit (30+ min)	21	$2,171	$103
Office for the evaluation and management of established patient that may not require presence of healthcare professional	32	$760	$22

2018: 9 services

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Original Medicare services billed in 2018

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	31	$20,281	$579
Long return visit (40+ min)	130	$19,173	$117
Partial removal of breast	35	$13,318	$341
New patient visit (60+ min)	32	$5,953	$186
Biopsy or removal of deep lymph nodes of underarm	27	$5,242	$194
New patient visit (45+ min)	14	$1,817	$130
New patient visit (30+ min)	16	$1,613	$101
Return visit (30+ min)	13	$1,212	$93
Office for the evaluation and management of established patient that may not require presence of healthcare professional	20	$494	$21

2017: 10 services

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Original Medicare services billed in 2017

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	32	$19,394	$524
Long return visit (40+ min)	108	$18,950	$125
Partial removal of breast	29	$10,743	$347
New patient visit (60+ min)	41	$7,652	$187
Biopsy or removal of deep lymph nodes of underarm	29	$6,041	$208
Return visit (30+ min)	16	$1,814	$95
Short return visit (20+ min)	19	$1,657	$66
Imaging of lymph nodes during surgery	11	$1,294	$118
Office for the evaluation and management of established patient that may not require presence of healthcare professional	13	$255	$20
New patient visit (10+ min)	12	$251	$21

2016: 9 services

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Original Medicare services billed in 2016

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	17	$10,426	$579
Partial removal of breast	24	$10,017	$385
Short return visit (20+ min)	71	$5,318	$60
New patient visit (60+ min)	26	$4,929	$190
Biopsy or removal of deep lymph nodes of underarm	17	$3,412	$201
New patient visit (10+ min)	36	$1,452	$40
Return visit (30+ min)	14	$1,410	$88
Short return visit	28	$1,164	$39
Office for the evaluation and management of established patient that may not require presence of healthcare professional	25	$508	$19

2015: 8 services

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Original Medicare services billed in 2015

Partial removal of breast	16	$7,673	$426
New patient visit (60+ min)	33	$6,172	$187
Short return visit (20+ min)	71	$5,075	$60
Biopsy or removal of deep lymph nodes of underarm	14	$2,831	$202
Return visit (30+ min)	25	$2,517	$97
Long return visit (40+ min)	15	$2,501	$139
New patient visit (45+ min)	16	$2,464	$154
Short return visit	22	$914	$38

2014: 10 services

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Original Medicare services billed in 2014

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	18	$10,511	$553
Partial removal of breast	18	$7,430	$391
New patient visit (60+ min)	34	$5,728	$168
Short return visit (20+ min)	77	$5,481	$58
Biopsy or removal of deep lymph nodes of underarm	15	$3,201	$213
New patient visit (45+ min)	13	$1,858	$143
Return visit (30+ min)	17	$1,701	$95
Long return visit (40+ min)	12	$1,620	$125
New patient visit (30+ min)	14	$1,295	$93
Short return visit	16	$483	$27

2013: 9 services

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Original Medicare services billed in 2013

Repair of wound of trunk by transferring skin, 10.1-30.0 sq cm	18	$10,321	$573
Partial removal of breast	19	$6,664	$333
Short return visit (20+ min)	57	$4,292	$62
New patient visit (60+ min)	16	$2,611	$163
Biopsy or removal of deep lymph nodes of underarm	13	$2,606	$200
New patient visit (45+ min)	18	$2,518	$140
New patient visit (30+ min)	19	$1,815	$96
Return visit (30+ min)	17	$1,795	$94
Short return visit	27	$1,090	$38

Drugs they prescribed that Part D paid

$420

Pharmacies billed $420 in 2024.

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

Opioids were 64% of their Part D prescriptions (27 of 42) in 2024. Too few prescriptions to compare fairly with other clinicians.

42 generic and 0 brand-name prescriptions · $420 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.

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Largest Part D drug costs

Acetaminophen-Codeine	27	$115	$4

Year by year

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Part D prescribing by year

2024	42	34	64% (27)	0%	$420
2023	40	30	58% (23)	None	$338
2022	63	47	65% (41)	0%	$361
2021	51	38	59% (30)	0%	$466
2020	48	36	65% (31)	0%	$355
2019	58	47	66% (38)	0%	$277
2018	56	45	70% (39)	0%	$357
2017	57	38	54% (31)	0%	$287
2016	36	27	61% (22)	None	$189
2015	25	19	60% (15)	0%	$128
2014	53	28	57% (30)	0%	$334
2013	44	28	52% (23)	0%	$406

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

See the drugs prescribed each year

2023: 1 drug

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Part D drugs prescribed in 2023

Acetaminophen-Codeine	20	$57	$3

2022: 1 drug

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Part D drugs prescribed in 2022

Acetaminophen-Codeine	37	$159	$4

2021: 1 drug

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Part D drugs prescribed in 2021

Acetaminophen-Codeine	24	$111	$5

2020: 3 drugs

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Part D drugs prescribed in 2020

Cephalexin	11	$169	$15
Acetaminophen-Codeine	16	$93	$6
Tramadol	15	$46	$3

2019: 1 drug

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Part D drugs prescribed in 2019

Tramadol	27	$91	$3

2018: 2 drugs

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Part D drugs prescribed in 2018

Acetaminophen-Codeine	17	$83	$5
Tramadol	22	$56	$3

2017: 2 drugs

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Part D drugs prescribed in 2017

Cephalexin	11	$82	$7
Tramadol	20	$64	$3

2016: 1 drug

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Part D drugs prescribed in 2016

Tramadol	16	$50	$3

2015: 1 drug

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Part D drugs prescribed in 2015

Tramadol	13	$37	$3

2014: 2 drugs

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Part D drugs prescribed in 2014

Cephalexin	17	$170	$10
Tramadol	28	$114	$4

2013: 1 drug

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Part D drugs prescribed in 2013

Tramadol	21	$83	$4

Money from drug and device companies

$103 in 2021

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Industry payments by year

2021	1	1	None	$103
2019	1	1	None	$108

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

Pacira Pharmaceuticals	Exparel	$103	1 payment Meals for Exparel · 2021-06-10 · $103

See the published payment

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Every published payment

Pacira Pharmaceuticals	Meals · 2021-06-10	Exparel	$103

See earlier years (2019)

2019: $108

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Payments by company in 2019

Focal Therapeutics	Biozorb	$108	1 payment Meals for Biozorb · 2019-01-22 · $108

Professional record

NPI: 1821055336
Licence: CA A91895California A91895: Current · expires 2027-05-31
Group: Sutter Bay Medical Foundation
Gender: Female

More record details

Sole proprietor: No
Medicaid ID: CA 0A9189500
Taxonomy: Surgery (208600000X)
Mailing address: 325 Distel Cir, Los Altos, CA, 94022
NPI first listed: 2006-04-27
NPI last updated: 2020-07-15
NPI record certified: 2020-07-15

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