Doctor profile · Federal record
Dr. Kenneth Hammerman, MD
Gastroenterology Physician · Internal Medicine Physician · San Francisco, CA
- NPI 1174600365
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1199 Bush Street, Suite #500
San Francisco, CA 94109
(415) 673-7600
fax (415) 673-8065
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- September 11, 2025
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #G25963
- Medicaid
- CA #00G259630
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174600365. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
171
Distinct HCPCS
3
Medicare allowed
$24,298
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 103 | 84 | $150 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 34 | 33 | $107 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 34 | 34 | $153 |
In context: peer comparison
Among 24 peers in this city , average services per provider: 42. This provider delivers 4.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
961
Patients
332
Total drug cost
$63,943
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 184 | 62 | $2,548 |
| Amlodipine Besylate | Generic | 126 | 42 | $1,046 |
| Losartan Potassium | Generic | 119 | 42 | $2,143 |
| Hydrochlorothiazide | Generic | 57 | 19 | $431 |
| Pantoprazole Sodium | Generic | 55 | 22 | $1,221 |
| Metoprolol Succinate | Generic | 54 | 19 | $1,152 |
| Levothyroxine Sodium | Generic | 52 | 21 | $1,200 |
| Metformin Hcl | Generic | 52 | 19 | $621 |
| Omeprazole | Generic | 46 | 18 | $706 |
| Eliquis (Apixaban) | Brand | 40 | 14 | $49,101 |
Frequently asked questions
What is Dr. Kenneth Hammerman's medical specialty?
Dr. Kenneth Hammerman practices Gastroenterology Physician in San Francisco, CA.
Where does Dr. Kenneth Hammerman practice?
Dr. Kenneth Hammerman practices at 1199 Bush Street, San Francisco, CA 94109. Office phone: 4156737600.
What is Dr. Kenneth Hammerman's NPI?
Dr. Kenneth Hammerman's National Provider Identifier (NPI) is 1174600365, issued by NPPES.
What procedures does Dr. Kenneth Hammerman commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.