Edward K. Onuma, M.D.,PHD
NPI 1477559722ActiveIndividual· Specialist· San Mateo, CA
Specialist (M.D.,PHD) in San Mateo, California, trained at State University of Ny Upstate Medical University (class of 1990). In 2024 Medicare paid $100,062 for 367 patients, and Part D covered 1,266 of their prescriptions, 86% of them generic. Abbvie Inc. was the largest of 5 companies reporting payments in 2025, $374.62 in all, mostly food and beverage.
Overview
| NPI | 1477559722 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D.,PHD |
| Sole proprietor | No |
| NPI issued | Jun 22, 2005 |
| Last updated in NPPES | Feb 21, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 00G855080 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 367 |
|---|---|
| Services billed | 810 across 25 procedure codes |
| Paid by Medicare | $100,062 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,266 · 2,386 30-day fills |
|---|---|
| Patients | 488 |
| Total drug cost | $143,963 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | State University of Ny Upstate Medical University |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Peninsula GastrointestinalSan Mateo, CA · 3 clinicians
Hospital affiliation
- Peninsula Medical CenterBurlingame, CA
Industry payments (Open Payments)
- 2025$374.62 · 11 payments from 5 companies
- 2024$159.83 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $134.01 | 5 |
| Madrigal Pharmaceuticals | $127.29 | 1 |
| Phathom Pharmaceuticals, Inc. | $51.35 | 3 |
| Pfizer Inc. | $31.91 | 1 |
| Azurity Pharmaceuticals, Inc. | $30.06 | 1 |
What the 2025 payments were for
- Food and Beverage$374.62 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 Specialist providers in San Mateo · All Specialist providers in California