Quick answers
- Which hospitals does William Grossman work at?
- Medicare's official clinician data lists William Grossman at 1 hospital: UCSF Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Grossman see patients?
- Medicare's clinician data lists 4 practice locations, including Burlingame, CA, Berkeley, CA and San Francisco, CA. Call before your visit to confirm the address.
- What is William Grossman's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does William Grossman accept Medicare assignment?
- Yes. Medicare's clinician data says William Grossman 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.
- What is the phone number for William Grossman?
- (650) 341-9131, as listed in official Medicare / NPI Registry data.
- What is William Grossman's NPI number?
- 1134178478. 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 Grossman works
Medicare's Facility Affiliation Data lists William Grossman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · CCN 050454
Practice locations
Addresses where William Grossman is enrolled with Medicare (CMS data updated 2026-10-02).
- 225 California DrBurlingame, CA 94010 (650) 341‑9131
- 3100 San Pablo AveBerkeley, CA 94702 (510) 985‑5020
- 400 Parnassus AveSan Francisco, CA 94143
- 400 Parnassus Ave, McB300San Francisco, CA 94143 (415) 476‑1000
Group practices
Medicare enrollment lists William Grossman 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
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Burlingame
Clinicians with the same Medicare primary specialty in Burlingame, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 1965 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134178478 |
| 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