Doctor profile · Federal record
Dr. Stephen Chen, M.D.
Internal Medicine Physician (CMS: Hospitalist) · Downey, CA
- NPI 1083844179
- Accepts Medicare
- 18 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
9333 Imperial Highway
Downey, CA 902422812
(562) 657-9000
Credentials & registration
- NPI registered
- July 2009 — 17 yrs on file
- Profile last updated
- March 7, 2023
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A108952
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083844179. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
13
Distinct HCPCS
1
Medicare allowed
$1,692
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 12 | $130 |
In context: peer comparison
Among 15 peers in this city , average services per provider: 213. This provider delivers 0.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
59
Patients
13
Total drug cost
$667
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 28 | 13 | $326 |
| Lisinopril | Generic | 16 | 0 | $183 |
| Losartan Potassium | Generic | 15 | 0 | $158 |
Hospital affiliations
Frequently asked questions
What is Dr. Stephen Chen's medical specialty?
Dr. Stephen Chen practices Internal Medicine Physician in Downey, CA.
Where does Dr. Stephen Chen practice?
Dr. Stephen Chen practices at 9333 Imperial Highway, Downey, CA 902422812. Office phone: 5626579000.
What is Dr. Stephen Chen's NPI?
Dr. Stephen Chen's National Provider Identifier (NPI) is 1083844179, issued by NPPES.
Does Dr. Stephen Chen accept Medicare assignment?
Yes. Dr. Stephen Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Chen commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.