Mary Ellen Mahoney, M.D.
NPI 1750352621ActiveIndividual· Surgery· Eureka, CA
Surgery (M.D.) in Eureka, California, trained at Stanford University School of Medicine (class of 1981). 41 Medicare patients in 2024, $36,695 paid; nearly all of their 124 Part D prescriptions were generic (99%). E.R. Squibb & Sons, L.L.C. was the largest of 2 companies reporting payments in 2025, $201.24 in all, mostly food and beverage.
Overview
| NPI | 1750352621 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 30, 2006 |
| Last updated in NPPES | Feb 2, 2024 |
| Certified by provider | Feb 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | G48569 | 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 - General Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 41 |
|---|---|
| Services billed | 152 across 16 procedure codes |
| Paid by Medicare | $36,695 |
Part D prescriptions in 2024
| Prescriptions (claims) | 124 · 254 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $1,942 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | General Practice |
Hospital affiliations
- Mad River Community HospitalArcata, CA
- Providence St Joseph HospitalEureka, CA
Industry payments (Open Payments)
- 2025$201.24 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $115.07 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $86.17 | 1 |
What the 2025 payments were for
- Food and Beverage$201.24 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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