Oscar E. Mendez, MD
NPI 1366403230ActiveIndividual· Psychiatry & Neurology, Neurology· Franklin, TN
Psychiatry & Neurology, Neurology (MD) with Williamson Medical Group, LLC, practicing in Franklin, Tennessee. Their prescriptions cost Medicare Part D more than their services did: $842,633 for 3,867 claims, against $81,895 paid for services in 2024. Abbvie Inc. was the largest of 9 companies reporting payments in 2025, $471.08 in all, mostly food and beverage. Lists Maury Regional Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1366403230 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 30, 2006 |
| Last updated in NPPES | Aug 12, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 39261 | TN |
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) | Enrolled Practitioner - Neurology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 672 |
|---|---|
| Services billed | 998 across 19 procedure codes |
| Paid by Medicare | $81,895 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,867 · 7,456 30-day fills |
|---|---|
| Patients | 609 |
| Total drug cost | $842,633 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Williamson Medical Group, LLCNolensville, TN · 69 clinicians
Hospital affiliations
- Maury Regional HospitalColumbia, TN
- Tristar Skyline Medical CenterNashville, TN
- Williamson Medical CenterFranklin, TN
Industry payments (Open Payments)
- 2025$471.08 · 19 payments from 9 companies
- 2024$138.11 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $144.77 | 9 |
| Inspire Medical Systems, Inc. | $133.28 | 1 |
| Neurocrine Biosciences, Inc. | $81.68 | 3 |
| Neurelis, Inc. | $22.26 | 1 |
| Argenx US, Inc. | $21.45 | 1 |
What the 2025 payments were for
- Food and Beverage$471.08 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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