Doctor profile · Federal record
Dr. Nathan Kam, M.D.
Gastroenterology Physician (CMS: Internal Medicine) · San Leandro, CA
- NPI 1598843351
- Accepts Medicare
- MIPS 74.5 / 100 · 2023
- 48 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2500 Merced Street
San Leandro, CA 945774201
(510) 454-1000
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- June 30, 2015
- Year of graduation
- 1978 — 48 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #G69248
- Medicaid
- CA #00G692480
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598843351. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
481
Distinct HCPCS
10
Medicare allowed
$57,694
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 99 | 90 | $98 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 78 | 78 | $97 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 67 | 67 | $166 | |
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 | 64 | 64 | $5 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 39 | 39 | $184 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 34 | 34 | $248 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 31 | 28 | $67 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 30 | 25 | $146 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 26 | 26 | $181 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 13 | 12 | $170 |
In context: peer comparison
Among 2 peers in San Leandro Gastroenterology Physician, average services per provider: 64. This provider delivers 7.5× the peer median.Open Payments
Industry payments received
All-time total
$145
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 2 | $145.18 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
364
Patients
251
Total drug cost
$5,601
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 73 | 72 | $1,322 |
| Ondansetron Odt (Ondansetron) | Brand | 66 | 64 | $173 |
| Omeprazole | Generic | 65 | 27 | $982 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 46 | 46 | $954 |
| Famotidine | Generic | 37 | 11 | $593 |
| Pantoprazole Sodium | Generic | 30 | 15 | $514 |
| Dicyclomine Hcl | Generic | 17 | 0 | $592 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 16 | 16 | $378 |
| Amitriptyline Hcl | Generic | 14 | 0 | $94 |
Hospital affiliations
Frequently asked questions
What is Dr. Nathan Kam's medical specialty?
Dr. Nathan Kam practices Gastroenterology Physician in San Leandro, CA.
Where does Dr. Nathan Kam practice?
Dr. Nathan Kam practices at 2500 Merced Street, San Leandro, CA 945774201. Office phone: 5104541000.
What is Dr. Nathan Kam's NPI?
Dr. Nathan Kam's National Provider Identifier (NPI) is 1598843351, issued by NPPES.
Does Dr. Nathan Kam accept Medicare assignment?
Yes. Dr. Nathan Kam accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathan Kam commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.