Brian T. Marsh, MD
Anesthesiology Physician · Santa Rosa, CA
Brian T. Marsh, MD is an anesthesiology physician with a practice address in Santa Rosa, California, and NPI 1588614598, issued on May 11, 2006. Check the license (California G77041, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Brian T. Marsh
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- G77041 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1165 Montgomery Dr, Santa Rosa, CA 95405
- Phone
- (707) 546-3210
- Enumerated
- May 11, 2006
- Record last updated
- Jul 13, 2026
- Medicaid ID
- 00G770410 CA
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 1165 Montgomery Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian T. Marsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77041Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Brian T. Marsh among 7,571 anesthesiology physician records in California
Brian T. Marsh, 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 not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileNo · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2026 · 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).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,571 in California → Every provider in Santa Rosa → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Darin Brunson, MDSanta Rosa, CA 954051063462893
- Charles Demitz, MDSanta Rosa, CA 954051477502904
- Margaret Fanucchi, MDSanta Rosa, CA 954051093764532
- Dyke Finley, MDSanta Rosa, CA 954051861441305
- Blair Halliday, MDSanta Rosa, CA 954051154370690
- Margaret McEvoy, MDSanta Rosa, CA 954051255380978
- John Nimtz, MDSanta Rosa, CA 954051851341804
- David Robertson, DOSanta Rosa, CA 954051396795340
Common questions
What is Brian T. Marsh, MD's NPI number?
Brian T. Marsh, MD's National Provider Identifier (NPI) is 1588614598, issued on May 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian T. Marsh, MD located?
The NPPES record lists a practice address at 1165 Montgomery Dr, Santa Rosa, CA, 95405. Phone: (707) 546-3210. Providers update this record themselves, so call before visiting.
How can I verify Brian T. Marsh, MD's license?
NPPES lists California license number G77041, 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. 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.