Doctor profile · Federal record
Dr. Stephen Nguyen, MD
Internal Medicine Physician (CMS: Internal Medicine) · Sun City, CA
- NPI 1619976644
- Accepts Medicare
- MIPS 91.9 / 100 · 2023
- 29 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
29798 Haun RD Ste 206
Sun City, CA 925866542
(951) 672-4900
fax (951) 301-0025
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- July 9, 2007
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A72564
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619976644. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
9,403
Distinct HCPCS
10
Medicare allowed
$544,621
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99442 |
Telephone medical discussion with physician, 11-20 minutes | 1,113 | 424 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,112 | 573 | $137 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 575 | 308 | $97 | |
36415 |
Insertion of needle into vein for collection of blood sample | 570 | 348 | $8 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 387 | 310 | $13 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 352 | 352 | $140 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 346 | 309 | $16 | |
83036 |
Hemoglobin a1c level | 341 | 287 | $10 | |
82306 |
Vitamin d-3 level | 307 | 289 | $29 | |
G0446 |
Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes | 297 | 297 | $27 |
In context: peer comparison
Among 7 peers in this city , average services per provider: 157. This provider delivers 60× the peer median.Open Payments
Industry payments received
All-time total
$858
Transactions
34
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | 6 | $134.70 | |
| Amgen Inc. | 1 | $120.39 | |
| Novo Nordisk Inc | 5 | $90.67 | |
| Otsuka America Pharmaceutical, Inc. | 3 | $81.95 | |
| Esperion Therapeutics, Inc. | 3 | $60.43 | |
| AstraZeneca Pharmaceuticals LP | 3 | $51.52 | |
| Eisai Inc. | 2 | $51.39 | |
| Lilly USA, LLC | 2 | $48.67 | |
| Novartis Pharmaceuticals Corporation | 3 | $46.47 | |
| ABIOMED | 1 | $43.71 | |
| Actelion Pharmaceuticals US, Inc. | 1 | $24.42 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $23.78 | |
| Bayer Healthcare Pharmaceuticals Inc. | 1 | $23.75 | |
| Abbott Laboratories | 1 | $22.36 | |
| ABBVIE INC. | 1 | $19.18 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,104
Patients
1,496
Total drug cost
$109,851
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 851 | 262 | $17,020 |
| Rosuvastatin Calcium | Generic | 674 | 201 | $23,417 |
| Levothyroxine Sodium | Generic | 529 | 155 | $11,417 |
| Amlodipine Besylate | Generic | 462 | 146 | $5,741 |
| Lisinopril | Generic | 316 | 96 | $3,953 |
| Tamsulosin Hcl | Generic | 288 | 97 | $6,722 |
| Gabapentin | Generic | 255 | 71 | $6,789 |
| Alprazolam | Generic | 234 | 55 | $1,867 |
| Metoprolol Succinate | Generic | 228 | 74 | $5,607 |
| Zolpidem Tartrate | Generic | 228 | 45 | $2,121 |
Hospital affiliations
Frequently asked questions
What is Dr. Stephen Nguyen's medical specialty?
Dr. Stephen Nguyen practices Internal Medicine Physician in Sun City, CA.
Where does Dr. Stephen Nguyen practice?
Dr. Stephen Nguyen practices at 29798 Haun RD Ste 206, Sun City, CA 925866542. Office phone: 9516724900.
What is Dr. Stephen Nguyen's NPI?
Dr. Stephen Nguyen's National Provider Identifier (NPI) is 1619976644, issued by NPPES.
Does Dr. Stephen Nguyen accept Medicare assignment?
Yes. Dr. Stephen Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Telephone medical discussion with physician (HCPCS 99442); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.