Doctor profile · Federal record
Dr. James Chang, M.D.
Hospitalist Physician (CMS: Internal Medicine) · San Leandro, CA
- NPI 1801158332
- Accepts Medicare
- 14 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2500 Merced St
San Leandro, CA 945774201
(510) 454-1000
Credentials & registration
- NPI registered
- June 2012 — 14 yrs on file
- Profile last updated
- December 27, 2021
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A137363
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1801158332. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$379
Transactions
4
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 4 | $378.90 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
123
Patients
63
Total drug cost
$2,132
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Furosemide | Generic | 29 | 23 | $315 |
| Lisinopril | Generic | 20 | 0 | $185 |
| Pantoprazole Sodium | Generic | 20 | 13 | $219 |
| Atorvastatin Calcium | Generic | 15 | 0 | $236 |
| Cefadroxil | Generic | 14 | 14 | $171 |
| Doxycycline Monohydrate | Generic | 13 | 13 | $94 |
| Humulin N (Insulin Nph Human Isophane) | Brand | 12 | 0 | $912 |
Hospital affiliations
Frequently asked questions
What is Dr. James Chang's medical specialty?
Dr. James Chang practices Hospitalist Physician in San Leandro, CA.
Where does Dr. James Chang practice?
Dr. James Chang practices at 2500 Merced St, San Leandro, CA 945774201. Office phone: 5104541000.
What is Dr. James Chang's NPI?
Dr. James Chang's National Provider Identifier (NPI) is 1801158332, issued by NPPES.
Does Dr. James Chang accept Medicare assignment?
Yes. Dr. James Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.