Peter James Walsh, M.D.
Mental Health Counselor · Greenbrae, CA
Peter James Walsh, M.D. is a mental health counselor with a practice address in Greenbrae, California, and NPI 1477890846, issued on Jan 5, 2013. Check the license (California C30448, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peter James Walsh
- Credential
- M.D.
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- License number
- C30448 CA
Self-reported in NPPES; status is on the state search - Practice location
- 900 S Eliseo Dr, Greenbrae, CA 94904
- Phone
- (415) 461-9247
- Enumerated
- Jan 5, 2013
- Record last updated
- Jan 5, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest mental health counselor records → All 28,617 in California → Look up another NPI →
Also registered at 900 S Eliseo Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter James Walsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license C30448Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
104 Medicare Part D claims are listed under this NPI for 2024
104 Medicare Part D claims for 16 beneficiaries.
CMS lists these Part D claims under this NPI, but the provider type reported to NPPES (mental health counselor) is not one that prescribes. The claims may be attributed to the wrong NPI in the CMS file, or the NPPES taxonomy may be out of date; PlainDoctor does not compare them with other providers.
Most prescribed
- Lorazepam15 claims
- Buspirone Hcl14 claims
- Trazodone Hcl13 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.
Peter James Walsh among 28,617 mental health counselor records in California
Peter James Walsh, M.D. is one of 28,617 mental health counselor records with a practice address in California. 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 41% of them.
- NPI issued2013 · 41% of these records are older, 54% newer
- In a Medicare fileYes · 1% of these records are
- In the CMS Doctors and Clinicians fileNo · 3% of these records are
- Record last updated2013 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 mental health counselor records list a practice address in Greenbrae
They are 22 of the 727 NPPES records with a practice address in Greenbrae, and 28,617 mental health counselor records in California.
All 28,617 in California → Every provider in Greenbrae → Mental Health Counselor nationwide →
The 8 mental health counselor records with the nearest ZIP codes
- Debra Bellings-Kee, MFTKentfield, CA 949041477634996
- Amber ByasseeGreenbrae, CA 949041710077458
- Sharon DigullaGreenbrae, CA 949041548377369
- Seth FriedrichGreenbrae, CA 949041538382023
- Elizabeth Greason, L.C.S.W.Kentfield, CA 949041962457655
- Astrid JohnsonGreenbrae, CA 949041720298607
- Vicki MartiGreenbrae, CA 949041770791618
- Jack Maslow, MSWKentfield, CA 949041235267071
Common questions
What is Peter James Walsh, M.D.'s NPI number?
Peter James Walsh, M.D.'s National Provider Identifier (NPI) is 1477890846, issued on Jan 5, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Peter James Walsh, M.D. located?
The NPPES record lists a practice address at 900 S Eliseo Dr, Greenbrae, CA, 94904. Phone: (415) 461-9247. Providers update this record themselves, so call before visiting.
How can I verify Peter James Walsh, M.D.'s license?
NPPES lists California license number C30448, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Peter James Walsh, M.D. prescribe under Medicare Part D?
In 2024, Peter James Walsh, M.D. had 104 Medicare Part D claims for 16 beneficiaries; the average among mental health counselor prescribers was 797. 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.