Brian Hamway, MD
NPI 1437372273 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Hamway, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1437372273).
Provider details
- NPI number
- 1437372273
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G88412 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 |
| Alprazolam | 15 |
| Gabapentin | 15 |
| Metformin Hcl | 15 |
| Mupirocin | 14 |
| Zolpidem Tartrate | 13 |
| Cyclobenzaprine Hcl | 13 |
| Medroxyprogesterone Acetate | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$313 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-10
- Last updated
- 2017-01-18
Frequently asked questions
- What is Brian Hamway's NPI number?
- Brian Hamway's National Provider Identifier (NPI) is 1437372273, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Hamway's specialty?
- Brian Hamway is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Hamway located?
- Brian Hamway's practice location on file with NPPES is 36 Grattan St, San Francisco, CA 94117-4326.
- What is Brian Hamway's phone number?
- The practice phone number listed in the NPPES registry for Brian Hamway is (415) 854-1575.
- Does Brian Hamway accept Medicare?
- Brian Hamway is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Hamway's NPI active?
- Yes — Brian Hamway's NPI (1437372273) is active in the NPPES registry as of the last update on 2017-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.