Michael Thomas Geiser, M.D.
Psychiatry Physician · San Francisco, CA
Michael Thomas Geiser, M.D. is a psychiatry physician with a practice address in San Francisco, California, and NPI 1265460166, issued on Jun 29, 2006. Check the license (California G35489, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Michael Thomas Geiser
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G35489 CA
Self-reported in NPPES; status is on the state search - Practice location
- 375 Laguna Honda Blvd, San Francisco, CA 94116
- Phone
- (415) 206-6405
- Enumerated
- Jun 29, 2006
- Record last updated
- Dec 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (415) 206-6918
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 375 Laguna Honda Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Thomas Geiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G35489Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Michael Thomas Geiser among 8,673 psychiatry physician records in California
Michael Thomas Geiser, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2014 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
763 psychiatry physician records list a practice address in San Francisco
They are 763 of the 38,143 NPPES records with a practice address in San Francisco, and 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in San Francisco → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- John Barker, M.D.San Francisco, CA 941161487794020
- Anita Barzman, MDSan Francisco, CA 941161154584985
- Helena Chan, M.D.San Francisco, CA 941161831399369
- Siu-Kwan Chow, M.D.San Francisco, CA 941161972544419
- Michael Coleman, MDSan Francisco, CA 941161720127459
- Verna LoSan Francisco, CA 941161801025275
- Laurie Mun, M.D.San Francisco, CA 941161720127665
- Daniel OlsonSan Francisco, CA 941161700232022
Common questions
What is Michael Thomas Geiser, M.D.'s NPI number?
Michael Thomas Geiser, M.D.'s National Provider Identifier (NPI) is 1265460166, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Thomas Geiser, M.D. located?
The NPPES record lists a practice address at 375 Laguna Honda Blvd, San Francisco, CA, 94116. Phone: (415) 206-6405. Providers update this record themselves, so call before visiting.
How can I verify Michael Thomas Geiser, M.D.'s license?
NPPES lists California license number G35489, 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.