James Rex Walker, MD
NPI 1578901500ActiveIndividual· Psychiatry & Neurology, Addiction Psychiatry· Greer, SC
Psychiatry & Neurology, Addiction Psychiatry (MD) with Ria Health PC and 1 other group, practicing in Greer, South Carolina. 53 Medicare patients in 2024, $25,986 paid; nearly all of their 826 Part D prescriptions were generic (97%). Lundbeck LLC was the largest of 2 companies reporting payments in 2025, $49.90 in all, mostly food and beverage.
Overview
| NPI | 1578901500 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 12, 2013 |
| Last updated in NPPES | Aug 25, 2025 |
| Certified by provider | Aug 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Addiction Psychiatry Primary | 2084P0802X | MD35703 | SC |
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 - Psychiatry (FL); Practitioner - Psychiatry (NC); Practitioner - Psychiatry (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 398 across 5 procedure codes |
| Paid by Medicare | $25,986 |
Part D prescriptions in 2024
| Prescriptions (claims) | 826 · 837 30-day fills |
|---|---|
| Patients | 131 |
| Total drug cost | $11,966 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical groups
- Ria Health PCMiramar, FL · 15 clinicians
- Uhs of Greenville, LLCGreer, SC · 11 clinicians
Industry payments (Open Payments)
- 2025$49.90 · 3 payments from 2 companies
- 2024$20.73 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lundbeck LLC | $31.84 | 2 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $18.06 | 1 |
What the 2025 payments were for
- Food and Beverage$49.90 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records