Marc I. Schwartz, M.D.
Psychiatry Physician · Greenbrae, CA
Marc I. Schwartz, M.D. is a psychiatry physician with a practice address in Greenbrae, California, and NPI 1538365200, issued on Jun 21, 2007. Check the license (California 0A31984, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marc I. Schwartz
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 0A31984 CA
Self-reported in NPPES; status is on the state search - Practice location
- 350 Bon Air Road, Greenbrae, CA 94904
- Phone
- (415) 945-4077
- Enumerated
- Jun 21, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 927-7003
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 350 Bon Air Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marc I. Schwartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 0A31984Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average psychiatry physician in 2024
109 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Escitalopram Oxalate25 claims
- Trazodone Hcl15 claims
- Bupropion Xl14 claims
- Sertraline Hcl11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Marc I. Schwartz among 8,673 psychiatry physician records in California
Marc I. Schwartz, 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. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 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).
18 psychiatry physician records list a practice address in Greenbrae
They are 18 of the 727 NPPES records with a practice address in Greenbrae, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Greenbrae → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Gordon Baumbacher, M.D.Kentfield, CA 949041144378217
- Heather Carlberg, M.D.Greenbrae, CA 949041346329968
- Mary Ann Caswick, MDGreenbrae, CA 949041467503912
- Sarah Centeno, MDKentfield, CA 949041366409922
- Richard Glass, M.D.Greenbrae, CA 949041952497745
- Carolyn Gracie, M.D.Kentfield, CA 949041639260862
- Jeanette Margolin, M.D.Kentfield, CA 949041447299243
- Edwyne Nazarian, MDKentfield, CA 949041093868655
Common questions
What is Marc I. Schwartz, M.D.'s NPI number?
Marc I. Schwartz, M.D.'s National Provider Identifier (NPI) is 1538365200, issued on Jun 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marc I. Schwartz, M.D. located?
The NPPES record lists a practice address at 350 Bon Air Road, Greenbrae, CA, 94904. Phone: (415) 945-4077. Providers update this record themselves, so call before visiting.
How can I verify Marc I. Schwartz, M.D.'s license?
NPPES lists California license number 0A31984, 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.
How much does Marc I. Schwartz, M.D. prescribe under Medicare Part D?
In 2024, Marc I. Schwartz, M.D. had 109 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
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.