Quick answers
- Which hospitals does William C. Chen work at?
- Medicare's official clinician data lists William C. Chen at 4 hospitals: Marinhealth Medical Center, UCSF Medical Center, Washington Hospital and Zuckerberg San Francisco General Hosp & Trauma Ctr. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William C. Chen see patients?
- Medicare's clinician data lists 6 practice locations, including San Francisco, CA, Burlingame, CA and Berkeley, CA. Call before your visit to confirm the address.
- What is William C. Chen's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does William C. Chen accept Medicare assignment?
- Yes. Medicare's clinician data says William C. Chen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does William C. Chen offer telehealth?
- Medicare's clinician data says William C. Chen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William C. Chen?
- (415) 476-1000, as listed in official Medicare / NPI Registry data.
- What is William C. Chen's NPI number?
- 1417452251. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William C. Chen works
Medicare's Facility Affiliation Data lists William C. Chen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · CCN 050360
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · CCN 050454
- Washington HospitalFremont, CA · Acute Care Hospital · CCN 050195
- Zuckerberg San Francisco General Hosp & Trauma CtrSan Francisco, CA · Acute Care Hospital · CCN 050228
Practice locations
Addresses where William C. Chen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1600 Divisadero St, McB302San Francisco, CA 94115 (415) 476‑1000
- 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
Group practices
Medicare enrollment lists William C. Chen as a member of these groups (CMS data updated 2026-10-02).
- University of California San Francisco1,839 clinicians in the group
- UCSF Medical Group Business Services1,598 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417452251 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians