James Ahern, MD
NPI 1508359423ActiveIndividual· Family Medicine· Ventura, CA
Family Medicine (MD) in Ventura, California, trained at F H Netter, M.D. School of Med at Quinnipiac Univ (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $319,095 for 4,514 claims, against $135,126 paid for services in 2024. Eisai Inc. was the largest of 2 companies reporting payments in 2025, $60.45 in all, mostly food and beverage.
Overview
| NPI | 1508359423 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2018 |
| Last updated in NPPES | Sep 28, 2021 |
| Certified by provider | Sep 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A164158 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 495 |
|---|---|
| Services billed | 2,866 across 60 procedure codes |
| Paid by Medicare | $135,126 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,514 · 10,578 30-day fills |
|---|---|
| Patients | 464 |
| Total drug cost | $319,095 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | F H Netter, M.D. School of Med at Quinnipiac Univ |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Community Memorial Hospital - OjaiOjai, CA
- Community Memorial Hospital - VenturaVentura, CA
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
Other facilities
- Assisted Home CareHome health agency · Ventura, CA
- Farmer's Home HealthHome health agency · Ventura, CA
- Livingston Memorial Visiting Nurse AssociationHome health agency · Ventura, CA
- Los Robles HealthcareHome health agency · Thousand Oaks, CA
- Mission Home Health of Ventura, LLCHome health agency · Oxnard, CA
Industry payments (Open Payments)
- 2025$60.45 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Eisai Inc. | $30.61 | 1 |
| Astrazeneca Pharmaceuticals LP | $29.84 | 2 |
What the 2025 payments were for
- Food and Beverage$60.45 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 261 family medicine physicians in Ventura · All family medicine physicians in California