Doctor profile · Federal record
Dr. Nhan Nguyen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Garden Grove, CA
- NPI 1528248770
- Accepts Medicare
- 48 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
10298 Westminster Ave
Garden Grove, CA 928434830
(714) 537-8269
fax (714) 537-8065
Credentials & registration
- NPI registered
- November 2007 — 19 yrs on file
- Profile last updated
- June 24, 2010
- Year of graduation
- 1978 — 48 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A50424
- Medicaid
- CA #3466138
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528248770. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
230
Distinct HCPCS
2
Medicare allowed
$17,631
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 184 | 46 | $79 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 46 | 24 | $68 |
In context: peer comparison
Among 16 peers in Garden Grove Internal Medicine Physician, average services per provider: 257. This provider delivers 0.9× the peer median.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Urgo Medical North America, LLC | 1 | $22.20 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,231
Patients
404
Total drug cost
$85,276
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 239 | 68 | $4,596 |
| Losartan Potassium | Generic | 177 | 51 | $3,191 |
| Amlodipine Besylate | Generic | 123 | 32 | $1,853 |
| Metformin Hcl | Generic | 119 | 37 | $1,512 |
| Losartan-Hydrochlorothiazide (Losartan/Hydrochlorothiazide) | Brand | 69 | 20 | $1,676 |
| Rosuvastatin Calcium | Generic | 66 | 21 | $2,423 |
| Gabapentin | Generic | 64 | 25 | $862 |
| Lovastatin | Generic | 58 | 17 | $1,195 |
| Famotidine | Generic | 50 | 28 | $683 |
| Lisinopril | Generic | 50 | 18 | $821 |
Frequently asked questions
What is Dr. Nhan Nguyen's medical specialty?
Dr. Nhan Nguyen practices Internal Medicine Physician in Garden Grove, CA.
Where does Dr. Nhan Nguyen practice?
Dr. Nhan Nguyen practices at 10298 Westminster Ave, Garden Grove, CA 928434830. Office phone: 7145378269.
What is Dr. Nhan Nguyen's NPI?
Dr. Nhan Nguyen's National Provider Identifier (NPI) is 1528248770, issued by NPPES.
Does Dr. Nhan Nguyen accept Medicare assignment?
Yes. Dr. Nhan Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nhan Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Chronic care management services (HCPCS 99490). Source: CMS Medicare Physician & Other Practitioners file.