Jan Hirsch, MD
Anesthesiology Physician · Greenbrae, CA
Jan Hirsch, MD is an anesthesiology physician with a practice address in Greenbrae, California, and NPI 1811199086, issued on Jun 1, 2007. Check the license (California A97335, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jan Hirsch
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A97335 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 Bon Air RD, Greenbrae, CA 94904
- Phone
- (415) 925-7100
- Enumerated
- Jun 1, 2007
- Record last updated
- May 30, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090311000671); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 250 Bon Air RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Abrahams, MFTMarriage & Family Therapist1184738445
- Jory Adam, PA-CSurgical Physician Assistant1922269521
- Samuel Adams, MDHospitalist Physician1497785034
- Barbara Addleman, RNRegistered Nurse1053551267
- Linda Alexander, RNPsychiatric/Mental Health Registered Nurse1205589405
- Maxwell AlikinneyCounselor1538668728
Verify Jan Hirsch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A97335Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Anesthesiology Consultants OF MarinGreenbrae, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jan Hirsch among 7,571 anesthesiology physician records in California
Jan Hirsch, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 43% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1994 · median 2006 among the 4,868 with a school on file
- Record last updated2018 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 anesthesiology physician records list a practice address in Greenbrae
They are 46 of the 727 NPPES records with a practice address in Greenbrae, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Greenbrae → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- T Benson, M.D.Greenbrae, CA 949041720016637
- James Brandes, M.D.Greenbrae, CA 949041417985334
- Keith Chamberlin, M.D.Greenbrae, CA 949041265544654
- Anthony Chiu, M.D.Greenbrae, CA 949041437269495
- Christophe Dinello, M.D.Greenbrae, CA 949041730270620
- Benjamin Hu, MDGreenbrae, CA 949041487691143
- Sonali Joshi, MDGreenbrae, CA 949041639281751
- Patrick Kwan, M.D.Greenbrae, CA 949041164468286
Common questions
What is Jan Hirsch, MD's NPI number?
Jan Hirsch, MD's National Provider Identifier (NPI) is 1811199086, issued on Jun 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jan Hirsch, MD located?
The NPPES record lists a practice address at 250 Bon Air RD, Greenbrae, CA, 94904. Phone: (415) 925-7100. Providers update this record themselves, so call before visiting.
How can I verify Jan Hirsch, MD's license?
NPPES lists California license number A97335, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.