Marissa A Boeck, MD

2 locations · UCSF Dept of Surgery · University of California Sfgh Medical Group

Hospitals listed: UCSF Medical Center · Zuckerberg San Francisco General Hosp & Trauma Ctr. That is not proof they admit you there this week.

9 plans · 1 carrier

Licence A154281 · Current

Licensed to practise in California · since 2018 · expires 2027-11-30 · Cornell University Medical College.

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 Surgery - Surgery
• American Board of Surgery - Surgical Critical Care

2 hospitals

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

• 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
• Zuckerberg San Francisco General Hosp & Trauma CtrSan Francisco, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of San Francisco Health Network, which runs 2 hospitalsPatients rate it 3 of 5 · 72% would definitely recommend it
  Overall rating: 2 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.449, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.37, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.538, Oct 2024 – Sep 2025

$31,713

Medicare paid this office $31,713 for 83 people.

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

Procedures Medicare counted

Who their Medicare patients are

83 Original Medicare patients in 2024. Average age 75 · Women 47% · Also on Medicaid 65% · Health risk score 3.06. Sicker patients than 9 in 10 peers; the typical general surgery clinician is at 1.69.

Conditions among them: High blood pressure 75% · Diabetes 48% · Coronary heart disease 45% · Chronic kidney disease 45% · Atrial fibrillation 37% · Stroke 36% · Heart failure 35% · Dementia 33% · Depression 29% · Cancer 23% · COPD 22%.

The office billed $209,659, Medicare allowed $40,050 and paid $31,713; for 166 services of 34 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 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.

$1,531 in 2023

Medicaid paid $1,531 for 12 billed services this clinician did in 2023, 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.

$1,192

Pharmacies billed $1,192 in 2024.

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

Opioids were 0% of their Part D prescriptions (0 of 15) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

12 generic and fewer than 11 brand-name prescriptions · $1,192 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 prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

$184 in 2025

A payment is not proof that care is biased.

Medicare did not publish checkup rates for this clinician.

NPI

1003108531

Licence

CA A154281California A154281: Current · expires 2027-11-30

Trained

Js Weill Medical College, Cornell University, 2011 · 15 years ago

Group

UCSF Dept of Surgery · University of California Sfgh Medical Group

Gender

Female