Gregorio Abad-Santos, M.D.
NPI 1255451894ActiveIndividual· Pediatrics· Long Beach, CA
Pediatrics (M.D.) in Long Beach, California, licensed in CA, with an NPI issued in March 2007. Merck Sharp & Dohme LLC was the largest of 5 companies reporting payments in 2025, $137.03 in all, mostly food and beverage.
Overview
| NPI | 1255451894 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 29, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics Primary | 208000000X | A42068 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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$137.03 · 6 payments from 5 companies
- 2024$69.52 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $44.35 | 2 |
| Glaxosmithkline, LLC. | $29.00 | 1 |
| Regeneron Healthcare Solutions, Inc. | $23.21 | 1 |
| Sanofi Pasteur Inc. | $21.90 | 1 |
| Cipher Pharmaceuticals US LLC | $18.57 | 1 |
What the 2025 payments were for
- Food and Beverage$137.03 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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