Doctor profile · Federal record

Dr. Andrew Nguyen, MD

Rheumatology Physician (CMS: Internal Medicine) · Riverside, CA

  • NPI 1366590291
  • Accepts Medicare
  • 25 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
10800 Magnolia Ave
Riverside, CA 925053043
(909) 353-2000

Credentials & registration

NPPES · NUCC
NPI registered
January 2007 — 19 yrs on file
Profile last updated
December 3, 2021
Year of graduation
2001 — 25 yrs since
Specialty taxonomy
207RR0500X — NUCC code
State license (1)
California #20A8400

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1366590291. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$267
Transactions
3
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Actelion Pharmaceuticals US, Inc. 1 $130.38
Axonics, Inc. 1 $108.88
Janssen Biotech, Inc. 1 $27.48

By nature of payment

Food and Beverage
$267

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,793
Patients
662
Total drug cost
$1,114,700
Drug Type Claims Patients Total cost
Methotrexate (Methotrexate Sodium) Brand 357 135 $6,890
Prednisone Generic 329 152 $5,031
Hydroxychloroquine Sulfate Generic 293 127 $10,074
Enbrel (Etanercept) Brand 113 13 $565,626
Amjevita(Cf) Autoinjector (Adalimumab-Atto) Brand 112 21 $189,296
Leflunomide Generic 88 32 $2,543
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 74 24 $1,327
Enbrel Sureclick (Etanercept) Brand 65 15 $322,953
Gabapentin Generic 65 24 $1,542
Meloxicam Generic 64 23 $557

Frequently asked questions

Auto-generated from federal data
What is Dr. Andrew Nguyen's medical specialty?
Dr. Andrew Nguyen practices Rheumatology Physician in Riverside, CA.
Where does Dr. Andrew Nguyen practice?
Dr. Andrew Nguyen practices at 10800 Magnolia Ave, Riverside, CA 925053043. Office phone: 9093532000.
What is Dr. Andrew Nguyen's NPI?
Dr. Andrew Nguyen's National Provider Identifier (NPI) is 1366590291, issued by NPPES.
Does Dr. Andrew Nguyen accept Medicare assignment?
Yes. Dr. Andrew Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.