Katherine M. Williams, NP
NPI 1134471485ActiveIndividual· Nurse Practitioner, Family· Marietta, GA
Nurse Practitioner, Family (NP) with Wellstar Medical Group LLC, practicing in Marietta, Georgia. Their prescriptions cost Medicare Part D more than their services did: $490,136 for 2,746 claims, against $48,195 paid for services in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $903.24 in all, mostly food and beverage. Lists Wellstar Kennestone Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1134471485 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Oct 11, 2012 |
| Last updated in NPPES | Oct 24, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | RN192284 | GA |
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 - Nurse Practitioner (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 327 |
|---|---|
| Services billed | 820 across 25 procedure codes |
| Paid by Medicare | $48,195 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,746 · 6,296 30-day fills |
|---|---|
| Patients | 578 |
| Total drug cost | $490,136 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Wellstar Medical Group LLCMarietta, GA · 3,093 clinicians
Hospital affiliation
- Wellstar Kennestone Regional Medical CenterMarietta, GA
Industry payments (Open Payments)
- 2025$903.24 · 56 payments from 17 companies
- 2024$1,157 · 68 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $201.86 | 19 |
| Lilly USA, LLC | $156.88 | 10 |
| Pfizer Inc. | $86.05 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $63.72 | 3 |
| Astellas Pharma US Inc | $63.71 | 3 |
What the 2025 payments were for
- Food and Beverage$903.24 · 56 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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