Catherine Walker
NPI 1255749560ActiveIndividual· Nurse Practitioner, Women's Health· Nashville, TN
Nurse Practitioner, Women's Health in Nashville, Tennessee, trained at Vanderbilt University School of Medicine (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $4,296 for 321 claims, against $2,276 paid for services in 2024. Caris Mpi, Inc. was the largest of 8 companies reporting payments in 2025, $829.43 in all, mostly food and beverage.
Overview
| NPI | 1255749560 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jul 30, 2014 |
| Last updated in NPPES | Feb 25, 2025 |
| Certified by provider | Feb 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Women's Health Primary | 363LW0102X | CAM1-0438-5836 | TN |
| Registered Nurse | 163W00000X | 190094 | TN |
| Nurse Practitioner | 363L00000X | 18939 | TN |
| Nurse Practitioner, Adult Health | 363LA2200X | 2014006656 | 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 - Nurse Practitioner (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 37 |
|---|---|
| Services billed | 42 across 5 procedure codes |
| Paid by Medicare | $2,276 |
Part D prescriptions in 2024
| Prescriptions (claims) | 321 · 338 30-day fills |
|---|---|
| Patients | 145 |
| Total drug cost | $4,296 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Vanderbilt University School of Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Tristar Gynecology Oncology, LLCNashville, TN · 4 clinicians
Hospital affiliation
- Tristar Centennial Medical CenterNashville, TN
Industry payments (Open Payments)
- 2025$829.43 · 29 payments from 8 companies
- 2024$1,496 · 56 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Caris Mpi, Inc. | $196.39 | 7 |
| Eisai Inc. | $183.51 | 6 |
| Glaxosmithkline, LLC. | $111.60 | 4 |
| Abbvie Inc. | $103.66 | 3 |
| Merck Sharp & Dohme LLC | $94.35 | 3 |
What the 2025 payments were for
- Food and Beverage$829.43 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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