Tonya Knox Frazier, MD
NPI 1952376477ActiveIndividual· Psychiatry & Neurology, Neurology· Spartanburg, SC
Psychiatry & Neurology, Neurology (MD) in Spartanburg, South Carolina, trained at Michigan State University College of Human Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $1,335,029 for 4,486 claims, against $92,634 paid for services in 2024. Acadia Pharmaceuticals Inc was the largest of 27 companies reporting payments in 2025, $2,147 in all, mostly food and beverage.
Overview
| NPI | 1952376477 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 19, 2006 |
| Last updated in NPPES | Apr 28, 2022 |
| Certified by provider | Apr 28, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 28451 | 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 - Neurology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 560 |
|---|---|
| Services billed | 997 across 5 procedure codes |
| Paid by Medicare | $92,634 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,486 · 10,091 30-day fills |
|---|---|
| Patients | 851 |
| Total drug cost | $1,335,029 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Michigan State University College of Human Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Spartanburg Medical CenterSpartanburg, SC · 1,078 clinicians
Hospital affiliations
- Advent Health PolkColumbus, NC
- Cherokee Medical CenterGaffney, SC
- Pelham Medical CenterGreer, SC
- Spartanburg Medical CenterSpartanburg, SC
- Union Medical CenterUnion, SC
Other facilities
- Centerwell Home HealthHome health agency · Greenville, SC
- Interim Healthcare of the UpstateHome health agency · Greenville, SC
- Medical Services of America Home HealthHome health agency · Irmo, SC
- Spartanburg Regional Home HealthHome health agency · Spartanburg, SC
- Spartanburg Rehabilitation Institute, IncInpatient rehabilitation facility · Spartanburg, SC
Industry payments (Open Payments)
- 2025$2,147 · 104 payments from 27 companies
- 2024$1,909 · 109 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Acadia Pharmaceuticals Inc | $325.42 | 12 |
| Neurocrine Biosciences, Inc. | $253.47 | 18 |
| Abbvie Inc. | $243.73 | 13 |
| Pfizer Inc. | $163.39 | 15 |
| Ucb, Inc. | $155.32 | 5 |
What the 2025 payments were for
- Food and Beverage$2,147 · 104 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 neurologists in Spartanburg · All neurologists in South Carolina