Doctor profile · Federal record

Dr. Paymon Mesgarzadeh, M.D.

Cardiovascular Disease Physician (CMS: Internal Medicine) · Fontana, CA

  • NPI 1023216892
  • Accepts Medicare
  • 22 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
9985 Sierra Ave
Fontana, CA 923356720
(909) 427-5000

Credentials & registration

NPPES · NUCC
NPI registered
July 2007 — 19 yrs on file
Profile last updated
November 29, 2021
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207RC0000X — NUCC code
State license (1)
California #A109433

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023216892. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$17
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Abbott Laboratories 1 $17.37

By nature of payment

Food and Beverage
$17

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,728
Patients
652
Total drug cost
$150,038
Drug Type Claims Patients Total cost
Pradaxa (Dabigatran Etexilate Mesylate) Brand 230 76 $65,389
Bisoprolol Fumarate Generic 228 96 $7,829
Carvedilol Generic 174 64 $2,055
Amiodarone Hcl Generic 143 60 $3,913
Furosemide Generic 129 62 $1,647
Losartan Potassium Generic 115 48 $1,395
Amlodipine Besylate Generic 97 36 $1,179
Potassium Chloride Generic 88 38 $3,256
Dofetilide Generic 86 26 $12,949
Atorvastatin Calcium Generic 85 36 $1,238

Frequently asked questions

Auto-generated from federal data
What is Dr. Paymon Mesgarzadeh's medical specialty?
Dr. Paymon Mesgarzadeh practices Cardiovascular Disease Physician in Fontana, CA.
Where does Dr. Paymon Mesgarzadeh practice?
Dr. Paymon Mesgarzadeh practices at 9985 Sierra Ave, Fontana, CA 923356720. Office phone: 9094275000.
What is Dr. Paymon Mesgarzadeh's NPI?
Dr. Paymon Mesgarzadeh's National Provider Identifier (NPI) is 1023216892, issued by NPPES.
Does Dr. Paymon Mesgarzadeh accept Medicare assignment?
Yes. Dr. Paymon Mesgarzadeh accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.