Steven Hamilton, M.D.
NPI 1639188980 · Psychiatry Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Hamilton, M.D. is a Psychiatry Physician provider in San Francisco, CA (NPI 1639188980).
Provider details
- NPI number
- 1639188980
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A70412 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 75 | 13 |
| Quetiapine Fumarate | 61 | 21 |
| Escitalopram Oxalate | 48 | 15 |
| Pregabalin | 47 | 14 |
| Mirtazapine | 41 | 16 |
| Clonazepam | 41 | — |
| Lamotrigine | 35 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2021-12-15
Frequently asked questions
- What is Steven Hamilton's NPI number?
- Steven Hamilton's National Provider Identifier (NPI) is 1639188980, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Hamilton's specialty?
- Steven Hamilton is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Hamilton located?
- Steven Hamilton's practice location on file with NPPES is 401 Parnassus Ave, San Francisco, CA 94143-2211.
- What is Steven Hamilton's phone number?
- The practice phone number listed in the NPPES registry for Steven Hamilton is (415) 476-7889.
- Does Steven Hamilton accept Medicare?
- Steven Hamilton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Hamilton's NPI active?
- Yes — Steven Hamilton's NPI (1639188980) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.