Doctor profile · Federal record
Dr. Tam Nguyen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Garden Grove, CA
- NPI 1720153182
- Accepts Medicare
- 32 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
12221 Brookhurst St Ste 100
Garden Grove, CA 928402848
(714) 805-8260
fax (714) 908-8086 - Mailing address
-
19087 Chandon Ln
Huntington Beach, CA 926482145
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- April 22, 2023
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A55848
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1720153182. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
661
Distinct HCPCS
6
Medicare allowed
$89,396
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 460 | 78 | $139 | |
G0181 |
Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow | 54 | 30 | $112 | |
96372 |
Injection of drug or substance under skin or into muscle | 51 | 19 | $16 | |
99350 |
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | 47 | 21 | $197 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 29 | 29 | $180 | |
99345 |
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes | 20 | 20 | $215 |
In context: peer comparison
Among 16 peers in Garden Grove Internal Medicine Physician, average services per provider: 257. This provider delivers 2.6× the peer median.Open Payments
Industry payments received
All-time total
$122
Transactions
6
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | 2 | $31.80 | |
| Amgen INC. | 1 | $29.14 | |
| Novo Nordisk INC | 1 | $24.85 | |
| Exact Sciences Corporation | 1 | $19.03 | |
| Abbott Laboratories | 1 | $17.27 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,477
Patients
568
Total drug cost
$258,595
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azithromycin | Generic | 173 | 88 | $1,309 |
| Mirtazapine | Generic | 155 | 41 | $3,922 |
| Oseltamivir Phosphate | Generic | 141 | 73 | $4,410 |
| Januvia (Sitagliptin Phosphate) | Brand | 122 | 27 | $86,552 |
| Diclofenac Sodium | Generic | 116 | 56 | $4,439 |
| Gabapentin | Generic | 106 | 39 | $1,492 |
| Sodium Chloride (0.9 % Sodium Chloride) | Brand | 98 | 57 | $2,599 |
| Prednisone | Generic | 88 | 42 | $467 |
| Hydroxychloroquine Sulfate | Generic | 79 | 32 | $3,448 |
| Metoprolol Succinate | Generic | 77 | 31 | $1,330 |
Frequently asked questions
What is Dr. Tam Nguyen's medical specialty?
Dr. Tam Nguyen practices Internal Medicine Physician in Garden Grove, CA.
Where does Dr. Tam Nguyen practice?
Dr. Tam Nguyen practices at 12221 Brookhurst St Ste 100, Garden Grove, CA 928402848. Office phone: 7148058260.
What is Dr. Tam Nguyen's NPI?
Dr. Tam Nguyen's National Provider Identifier (NPI) is 1720153182, issued by NPPES.
Does Dr. Tam Nguyen accept Medicare assignment?
Yes. Dr. Tam Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tam Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow (HCPCS G0181); Injection of drug or substance under skin or into muscle (HCPCS 96372). Source: CMS Medicare Physician & Other Practitioners file.