Doctor profile · Federal record
Dr. Oliver Nguyen, MD
Internal Medicine Physician (CMS: Internal Medicine) · Bellflower, CA
- NPI 1356418289
- Accepts Medicare
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9400 Rosecrans Ave
Bellflower, CA 907062246
(562) 461-3000
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- December 3, 2021
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #G78281
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1356418289. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
19
Distinct HCPCS
1
Medicare allowed
$2,129
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 19 | 12 | $112 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 85. This provider delivers 0.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
3,779
Patients
1,389
Total drug cost
$49,686
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 857 | 318 | $14,060 |
| Amlodipine Besylate | Generic | 494 | 189 | $6,423 |
| Lisinopril | Generic | 344 | 119 | $4,429 |
| Rosuvastatin Calcium | Generic | 266 | 93 | $3,232 |
| Losartan Potassium | Generic | 210 | 73 | $2,836 |
| Metformin Hcl | Generic | 208 | 71 | $2,822 |
| Omeprazole | Generic | 185 | 73 | $1,964 |
| Buspirone Hcl | Generic | 184 | 68 | $1,412 |
| Escitalopram Oxalate | Generic | 176 | 70 | $1,881 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 172 | 66 | $1,411 |
Frequently asked questions
What is Dr. Oliver Nguyen's medical specialty?
Dr. Oliver Nguyen practices Internal Medicine Physician in Bellflower, CA.
Where does Dr. Oliver Nguyen practice?
Dr. Oliver Nguyen practices at 9400 Rosecrans Ave, Bellflower, CA 907062246. Office phone: 5624613000.
What is Dr. Oliver Nguyen's NPI?
Dr. Oliver Nguyen's National Provider Identifier (NPI) is 1356418289, issued by NPPES.
Does Dr. Oliver Nguyen accept Medicare assignment?
Yes. Dr. Oliver Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Oliver Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.