Doctor profile · Federal record

Dr. Denise O'Riordan, M.D.

Pediatrics Physician · Danville, CA

  • NPI 1265709737
  • 15 yrs on file
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4165 Blackhawk Plaza Cir, Suite #100
Danville, CA 945064904
(925) 736-7070

Credentials & registration

NPPES · NUCC
NPI registered
November 2011 — 15 yrs on file
Specialty taxonomy
208000000X — NUCC code
State license (1)
California #A82636

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1265709737. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$443
Transactions
17
Manufacturers
11
Payer (manufacturer) Industry Txns Amount
Pfizer INC. 5 $160.06
GlaxoSmithKline, LLC. 3 $82.57
Agios Pharmaceuticals, INC. 1 $28.76
Merck Sharp & Dohme LLC 1 $28.61
Sanofi Pasteur INC. 1 $24.27
Abbvie INC. 1 $24.21
Corium, LLC 1 $20.92
Almatica Pharma LLC 1 $20.01
Verity Pharmaceuticals INC. 1 $19.23
Tris Pharma INC 1 $18.69
Otsuka America Pharmaceutical, INC. 1 $15.77

By nature of payment

Food and Beverage
$443

Frequently asked questions

Auto-generated from federal data
What is Dr. Denise O'Riordan's medical specialty?
Dr. Denise O'Riordan practices Pediatrics Physician in Danville, CA.
Where does Dr. Denise O'Riordan practice?
Dr. Denise O'Riordan practices at 4165 Blackhawk Plaza Cir, Danville, CA 945064904. Office phone: 9257367070.
What is Dr. Denise O'Riordan's NPI?
Dr. Denise O'Riordan's National Provider Identifier (NPI) is 1265709737, issued by NPPES.