Doctor profile · Federal record
Dr. Niem Nguyen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Anaheim, CA
- NPI 1669429957
- Accepts Medicare
- 35 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1182 N Euclid St
Anaheim, CA 928011900
(714) 399-9222
fax (714) 399-9226 - Mailing address
-
12900 Park Plaza Dr
Cerritos, CA 907039329
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- July 29, 2011
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A78088
- Medicaid
- CA #00A780880
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669429957. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
819
Distinct HCPCS
4
Medicare allowed
$106,655
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 578 | 201 | $125 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 105 | 102 | $182 | |
99239 |
Hospital discharge day management, more than 30 minutes | 99 | 98 | $121 | |
99238 |
Hospital discharge day management, 30 minutes or less | 37 | 37 | $86 |
In context: peer comparison
Among 33 peers in this city , average services per provider: 165. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$298
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, Inc. | 2 | $298.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
217
Patients
181
Total drug cost
$1,985
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Odt (Ondansetron) | Brand | 63 | 62 | $645 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 38 | 37 | $239 |
| Atorvastatin Calcium | Generic | 19 | 14 | $193 |
| Metoprolol Tartrate | Generic | 18 | 17 | $76 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 16 | 11 | $241 |
| Furosemide | Generic | 16 | 16 | $62 |
| Pantoprazole Sodium | Generic | 13 | 12 | $172 |
| Amlodipine Besylate | Generic | 12 | 12 | $48 |
| Amiodarone Hcl | Generic | 11 | 0 | $180 |
| Potassium Chloride | Generic | 11 | 0 | $129 |
Hospital affiliations
Frequently asked questions
What is Dr. Niem Nguyen's medical specialty?
Dr. Niem Nguyen practices Internal Medicine Physician in Anaheim, CA.
Where does Dr. Niem Nguyen practice?
Dr. Niem Nguyen practices at 1182 N Euclid St, Anaheim, CA 928011900. Office phone: 7143999222.
What is Dr. Niem Nguyen's NPI?
Dr. Niem Nguyen's National Provider Identifier (NPI) is 1669429957, issued by NPPES.
Does Dr. Niem Nguyen accept Medicare assignment?
Yes. Dr. Niem Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Niem Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.