Denise O'Riordan, M.D.
NPI 1265709737ActiveIndividual· Pediatrics· Danville, CA
Pediatrics (M.D.) in Danville, California, licensed in CA, with an NPI issued in November 2011. Merck Sharp & Dohme LLC was the largest of 13 companies reporting payments in 2025, $390.19 in all, mostly food and beverage.
Overview
| NPI | 1265709737 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 28, 2011 |
| Last updated in NPPES | Nov 28, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics Primary | 208000000X | A82636 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$390.19 · 16 payments from 13 companies
- 2024$443.10 · 17 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $60.28 | 2 |
| Pfizer Inc. | $50.48 | 2 |
| Aimmune Therapeutics, Inc. | $50.21 | 2 |
| Vanda Pharmaceuticals Inc. | $35.01 | 1 |
| Kyowa Kirin, Inc. | $29.61 | 1 |
What the 2025 payments were for
- Food and Beverage$390.19 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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