Quick answers
- Which hospitals does Jan Hirsch work at?
- Medicare's official clinician data lists Jan Hirsch at 2 hospitals: Marinhealth Medical Center and Sonoma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jan Hirsch see patients?
- Medicare's clinician data lists 2 practice locations, including Greenbrae, CA and Sonoma, CA. Call before your visit to confirm the address.
- What is Jan Hirsch's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Jan Hirsch accept Medicare assignment?
- Yes. Medicare's clinician data says Jan Hirsch 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 Jan Hirsch?
- (415) 925-7000, as listed in official Medicare / NPI Registry data.
- What is Jan Hirsch's NPI number?
- 1811199086. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jan Hirsch works
Medicare's Facility Affiliation Data lists Jan Hirsch 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
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · CCN 050090
Practice locations
Addresses where Jan Hirsch is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 Bon Air RdGreenbrae, CA 94904 (415) 925‑7000
- 347 Andrieux StSonoma, CA 95476 (707) 935‑5000
Group practices
Medicare enrollment lists Jan Hirsch as a member of this group (CMS data updated 2026-10-02).
- Anesthesiology Consultants of Marin32 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Greenbrae
Clinicians with the same Medicare primary specialty in Greenbrae, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811199086 |
| 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