Doctor profile · Federal record

Dr. Brian Hamway, MD

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · San Francisco, CA

  • NPI 1437372273
  • 33 yrs in practice
  • Licensed in 3 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
36 Grattan St
San Francisco, CA 941174326
(415) 854-1575
fax (877) 992-3841

Credentials & registration

NPPES · NUCC
NPI registered
April 2007 — 19 yrs on file
Profile last updated
January 18, 2017
Year of graduation
1993 — 33 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (3)
California #G88412 · New York #203202 · New Jersey #25MA07710200

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1437372273. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$313
Transactions
3
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Dermavant Sciences, INC. 1 $143.72
Lilly USA, LLC 1 $117.64
Genzyme Corporation 1 $51.71

By nature of payment

Food and Beverage
$313

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
27
Patients
0
Total drug cost
$106
Drug Type Claims Patients Total cost
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 16 0 $27
Amlodipine Besylate Generic 11 0 $79

Frequently asked questions

Auto-generated from federal data
What is Dr. Brian Hamway's medical specialty?
Dr. Brian Hamway practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Brian Hamway practice?
Dr. Brian Hamway practices at 36 Grattan St, San Francisco, CA 941174326. Office phone: 4158541575.
What is Dr. Brian Hamway's NPI?
Dr. Brian Hamway's National Provider Identifier (NPI) is 1437372273, issued by NPPES.
Does Dr. Brian Hamway accept Medicare assignment?
Dr. Brian Hamway does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.