Doctor profile · Federal record

Dr. Thomas Chen, M.D.

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

  • NPI 1053329227
  • Accepts Medicare
  • 24 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
7117 Brockton Ave
Riverside, CA 925062658
(951) 782-3849
fax (951) 784-3271
Mailing address
393 E Walnut St
Pasadena, CA 911880001

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
November 29, 2021
Year of graduation
2002 — 24 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A85898

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1053329227. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$148
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
ABBVIE INC. 1 $124.57
ViiV Healthcare Company 1 $22.96

By nature of payment

Food and Beverage
$148

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
697
Patients
198
Total drug cost
$19,047
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 97 37 $1,250
Losartan Potassium Generic 87 29 $1,109
Amlodipine Besylate Generic 73 25 $936
Rosuvastatin Calcium Generic 43 17 $502
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 40 13 $751
Levothyroxine Sodium Generic 40 12 $808
Lisinopril Generic 39 16 $485
Metformin Hcl Generic 39 11 $596
Pradaxa (Dabigatran Etexilate Mesylate) Brand 39 0 $7,286
Donepezil Hcl Generic 35 0 $773

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Chen's medical specialty?
Dr. Thomas Chen practices Internal Medicine Physician in Riverside, CA.
Where does Dr. Thomas Chen practice?
Dr. Thomas Chen practices at 7117 Brockton Ave, Riverside, CA 925062658. Office phone: 9517823849.
What is Dr. Thomas Chen's NPI?
Dr. Thomas Chen's National Provider Identifier (NPI) is 1053329227, issued by NPPES.
Does Dr. Thomas Chen accept Medicare assignment?
Yes. Dr. Thomas Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.