Quick answers
- Where does Annabelle Willey see patients?
- Medicare's clinician data lists 4 practice locations, including San Francisco, CA and Mill Valley, CA. Call before your visit to confirm the address.
- What is Annabelle Willey's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Annabelle Willey accept Medicare assignment?
- Yes. Medicare's clinician data says Annabelle Willey 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 Annabelle Willey?
- (415) 918-5766, as listed in official Medicare / NPI Registry data.
- What is Annabelle Willey's NPI number?
- 1598335762. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Annabelle Willey is enrolled with Medicare (CMS data updated 2026-10-02).
- 1390 Market St, Suite 109San Francisco, CA 94102 (415) 918‑5766
- 1998 Market StSan Francisco, CA 94102 (415) 792‑6040
- 2131 Irving StSan Francisco, CA 94122 (415) 231‑2546
- 750 Redwood Hwy Frontage Rd, Suite 1204Mill Valley, CA 94941 (415) 384‑4778
Group practices
Medicare enrollment lists Annabelle Willey as a member of these groups (CMS data updated 2026-10-02).
- Carbon Health Medical Group of California PC334 clinicians in the group
- UCSF Health Medical Foundation66 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598335762 |
| 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
- 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