Doctor profile · Federal record
Dr. Thomas Chen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Oakland, CA
- NPI 1699112458
- Accepts Medicare
- 13 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1411 E 31St St
Oakland, CA 946021018
(510) 437-4800
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- February 11, 2022
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A133645
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699112458. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
28
Distinct HCPCS
1
Medicare allowed
$2,467
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 28 | 12 | $88 |
In context: peer comparison
Among 78 peers in Oakland Internal Medicine Physician, average services per provider: 326. This provider delivers 0.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
106
Patients
92
Total drug cost
$1,225
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Furosemide | Generic | 28 | 20 | $268 |
| Cefpodoxime Proxetil | Generic | 26 | 26 | $449 |
| Prednisone | Generic | 21 | 19 | $243 |
| Doxycycline Monohydrate | Generic | 16 | 15 | $114 |
| Amlodipine Besylate | Generic | 15 | 12 | $152 |
Hospital affiliations
Frequently asked questions
What is Dr. Thomas Chen's medical specialty?
Dr. Thomas Chen practices Internal Medicine Physician in Oakland, CA.
Where does Dr. Thomas Chen practice?
Dr. Thomas Chen practices at 1411 E 31St St, Oakland, CA 946021018. Office phone: 5104374800.
What is Dr. Thomas Chen's NPI?
Dr. Thomas Chen's National Provider Identifier (NPI) is 1699112458, issued by NPPES.
Does Dr. Thomas Chen accept Medicare assignment?
Yes. Dr. Thomas Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Chen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.