Doctor profile · Federal record
Dr. Ma Somsouk, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · San Francisco, CA
- NPI 1437296431
- Accepts Medicare
- MIPS 85.5 / 100 · 2023
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1001 Potrero Ave # 3D-2, Box 0862
San Francisco, CA 941103518
(415) 206-8823
fax (415) 641-0745
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- November 6, 2014
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A84310
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437296431. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
216
Distinct HCPCS
5
Medicare allowed
$23,759
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 91 | 87 | $6 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 40 | 39 | $118 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 31 | 31 | $285 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 28 | 28 | $159 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 26 | 26 | $201 |
In context: peer comparison
Among 24 peers in San Francisco Gastroenterology Physician, average services per provider: 42. This provider delivers 5.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
17
Patients
0
Total drug cost
$515
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 17 | 0 | $515 |
Hospital affiliations
Frequently asked questions
What is Dr. Ma Somsouk's medical specialty?
Dr. Ma Somsouk practices Gastroenterology Physician in San Francisco, CA.
Where does Dr. Ma Somsouk practice?
Dr. Ma Somsouk practices at 1001 Potrero Ave # 3D-2, San Francisco, CA 941103518. Office phone: 4152068823.
What is Dr. Ma Somsouk's NPI?
Dr. Ma Somsouk's National Provider Identifier (NPI) is 1437296431, issued by NPPES.
Does Dr. Ma Somsouk accept Medicare assignment?
Yes. Dr. Ma Somsouk accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ma Somsouk commonly perform?
Top Medicare-reported procedures in 2023: Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.