Keith Hermanstyne
NPI 1922321561 · Psychiatry Physician · San Francisco, CA
Keith Hermanstyne is a Psychiatry Physician provider in San Francisco, CA (NPI 1922321561).
Provider details
- NPI number
- 1922321561
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A115322 (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
16 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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 44 |
| Bupropion Hclbrand: Bupropion Xl | 37 |
| Escitalopram Oxalate | 36 |
| Aripiprazole | 26 |
| Lurasidone Hcl | 25 |
| Hydroxyzine Hcl | 20 |
| Fluoxetine Hcl | 19 |
| Olanzapine | 19 |
| Risperidone | 17 |
| Duloxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-03-10
- Last updated
- 2017-11-01
Frequently asked questions
- What is Keith Hermanstyne's NPI number?
- Keith Hermanstyne's National Provider Identifier (NPI) is 1922321561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keith Hermanstyne's specialty?
- Keith Hermanstyne is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Keith Hermanstyne located?
- Keith Hermanstyne's practice location on file with NPPES is 401 Parnassus Ave, San Francisco, CA 94143.
- What is Keith Hermanstyne's phone number?
- The practice phone number listed in the NPPES registry for Keith Hermanstyne is (415) 476-7723.
- Is Keith Hermanstyne's NPI active?
- Yes — Keith Hermanstyne's NPI (1922321561) is active in the NPPES registry as of the last update on 2017-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.