Mwanasha H. Merrill, MD

Medicare activity in 2024

Official CMS public-use data for Mwanasha H. Merrill, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Hospitals where Mwanasha H. Merrill works

Medicare's Facility Affiliation Data lists Mwanasha H. Merrill at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050360
• UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050454

Practice locations

Addresses where Mwanasha H. Merrill is enrolled with Medicare (CMS data updated October 2, 2026).

• 225 California DrBurlingame, CA 94010 (650) 341‑9131
• 2330 Post StSan Francisco, CA 94115 (415) 476‑4029
• 3100 San Pablo AveBerkeley, CA 94702 (510) 985‑5020
• 400 Parnassus AveSan Francisco, CA 94143
• 505 Parnassus AveSan Francisco, CA 94143 (415) 476‑4029

Group practices

Medicare enrollment lists Mwanasha H. Merrill as a member of these groups (CMS data updated October 2, 2026).

• University of California San Francisco1,839 clinicians in the group
• UCSF Medical Group Business Services1,598 clinicians in the group
• Regents of the University of California732 clinicians in the group

Specialties

• Hematology/Oncologyprimary
• Internal Medicinealso

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in Burlingame

Clinicians with the same Medicare primary specialty in Burlingame, CA — not a recommendation.

• Michael A. Spinner, MD
• Elham Vosoughi, MD
• Elizabeth Pan, MD
• Matthew H. Lee, DO
• Howard Lee, MD
• Edward Maldonado Jr., MD
• Ivan De Kouchkovsky, MD
• Catherine C. Smith, MD

All hematologist-oncologists in Burlingame →

Other clinicians in University of California San Francisco

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Yu Wu, NP
• Mia M. Ma, MD
• Margaret C. Fang, MD
• Michael Brook, MD
• Priya S. Dhawan, MD
• Scott A. Josephson, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians