Yinchong E. Mak, MD

1 location · Sutter Bay Medical Foundation · 3,783 clinicians in this group

Hospitals listed: 058123 · Mills-Peninsula Medical Center · Stanford Health Care. That is not proof they admit you there this week.

1 plan · 1 carrier

Licence A114561 · Current

Licensed to practise in California · since 2010 · expires 2028-11-30 · University of Pittsburgh School of Medicine.

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

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 - Internal Medicine

2 hospitals

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
• 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

$85,366

Medicare paid this office $85,366 for 273 people.

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

Procedures year by year

Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.

Who their Medicare patients are

273 Original Medicare patients in 2024. Average age 77 · Women 69% · Also on Medicaid 4% · Health risk score 0.88. At or below the middle of the specialty; the typical internal medicine clinician is at 1.76.

Conditions among them: High blood pressure 55% · Cancer 19% · Diabetes 18% · Coronary heart disease 16% · Depression 15% · Atrial fibrillation 14% · Chronic kidney disease 13% · Heart failure 10% · COPD 9% · Dementia 8%.

The office billed $225,921, Medicare allowed $107,223 and paid $85,366; for 1,255 services of 36 kinds; $14,228 of it was for drugs given in the office and $71,139 for care.

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 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.

$66 in 2019

Medicaid paid $66 for 14 billed services this clinician did in 2019, up to 12 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.

$217,845

Pharmacies billed $217,845 in 2024.

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

Opioids were 2% of their Part D prescriptions (48 of 2,475) in 2024. Above the middle of the specialty; the typical internal medicine clinician is at 1%.

2,202 generic and fewer than 11 brand-name prescriptions · $217,845 in drug cost · 54 antibiotic prescriptions to 37 people.

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

NPI

1982930491

Licence

CA A114561California A114561: Current · expires 2028-11-30

Trained

University of Pittsburgh School of Medicine, 2009 · 17 years ago

Group

Sutter Bay Medical Foundation

Video visits

Lists video visits

Gender

Female