Peter Walsh, M.D.
NPI 1477890846 · Mental Health Counselor · Greenbrae, CA
Peter Walsh, M.D. is a Mental Health Counselor provider in Greenbrae, CA (NPI 1477890846).
Provider details
- NPI number
- 1477890846
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C30448 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 15 |
| Buspirone Hcl | 14 |
| Trazodone Hcl | 13 |
| Sertraline Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-01-05
- Last updated
- 2013-01-05
Frequently asked questions
- What is Peter Walsh's NPI number?
- Peter Walsh's National Provider Identifier (NPI) is 1477890846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Walsh's specialty?
- Peter Walsh is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Peter Walsh located?
- Peter Walsh's practice location on file with NPPES is 900 S Eliseo Dr, Greenbrae, CA 94904-2134.
- What is Peter Walsh's phone number?
- The practice phone number listed in the NPPES registry for Peter Walsh is (415) 461-9247.
- Is Peter Walsh's NPI active?
- Yes — Peter Walsh's NPI (1477890846) is active in the NPPES registry as of the last update on 2013-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.