Doctor profile · Federal record
Dr. Robert Williams, M.D
Internal Medicine Physician (CMS: Internal Medicine) · San Francisco, CA
- NPI 1225193667
- Accepts Medicare
- 24 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
240 Shotwell St
San Francisco, CA 941101323
(415) 552-1013
fax (415) 431-3178
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A92069
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225193667. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
212
Distinct HCPCS
2
Medicare allowed
$1,843
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
83036 |
Hemoglobin a1c level | 188 | 103 | $10 | |
81003 |
Automated urinalysis test | 24 | 20 | $2 |
In context: peer comparison
Among 236 peers in this city , average services per provider: 93. This provider delivers 2.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,873
Patients
591
Total drug cost
$43,055
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 245 | 90 | $6,475 |
| Amlodipine Besylate | Generic | 225 | 70 | $3,935 |
| Metformin Hcl | Generic | 206 | 64 | $3,292 |
| Losartan Potassium | Generic | 139 | 41 | $2,437 |
| Lisinopril | Generic | 135 | 36 | $2,219 |
| Gabapentin | Generic | 119 | 43 | $3,124 |
| Omeprazole | Generic | 119 | 44 | $2,165 |
| Benazepril Hcl | Generic | 101 | 33 | $2,963 |
| Diclofenac Sodium | Generic | 96 | 31 | $3,350 |
| Pravastatin Sodium | Generic | 96 | 29 | $2,255 |
Hospital affiliations
Frequently asked questions
What is Dr. Robert Williams's medical specialty?
Dr. Robert Williams practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Robert Williams practice?
Dr. Robert Williams practices at 240 Shotwell St, San Francisco, CA 941101323. Office phone: 4155521013.
What is Dr. Robert Williams's NPI?
Dr. Robert Williams's National Provider Identifier (NPI) is 1225193667, issued by NPPES.
Does Dr. Robert Williams accept Medicare assignment?
Yes. Dr. Robert Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Williams commonly perform?
Top Medicare-reported procedures in 2023: Hemoglobin a1c level (HCPCS 83036); Automated urinalysis test (HCPCS 81003). Source: CMS Medicare Physician & Other Practitioners file.