Doctor profile · Federal record

Dr. Jonathan Siu, D.O.

Family Medicine Physician · Student in an Organized Health Care Education/Training Program · Claremont, CA

  • NPI 1346652179
  • 12 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
250 W San Jose Ave
Claremont, CA 917115207
(888) 750-0036

Credentials & registration

NPPES · NUCC
NPI registered
May 2014 — 12 yrs on file
Profile last updated
December 6, 2021
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
California #20A14265

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1346652179. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$19
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Hologic Sales and Service, LLC 1 $19.31

By nature of payment

Food and Beverage
$19

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
596
Patients
327
Total drug cost
$9,361
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 127 76 $1,930
Amlodipine Besylate Generic 81 46 $1,018
Lisinopril Generic 48 27 $452
Levothyroxine Sodium Generic 46 30 $1,035
Rosuvastatin Calcium Generic 45 27 $858
Losartan Potassium Generic 40 20 $509
Metformin Hcl Generic 34 18 $381
Tamsulosin Hcl Generic 28 14 $622
Omeprazole Generic 27 16 $300
Hydrochlorothiazide Generic 25 17 $233

Frequently asked questions

Auto-generated from federal data
What is Dr. Jonathan Siu's medical specialty?
Dr. Jonathan Siu practices Family Medicine Physician in Claremont, CA.
Where does Dr. Jonathan Siu practice?
Dr. Jonathan Siu practices at 250 W San Jose Ave, Claremont, CA 917115207. Office phone: 8887500036.
What is Dr. Jonathan Siu's NPI?
Dr. Jonathan Siu's National Provider Identifier (NPI) is 1346652179, issued by NPPES.