Karen Ann Williams, APNP
NPI 1134823479ActiveIndividual· Nurse Practitioner, Family· Fond Du Lac, WI
Nurse Practitioner, Family (APNP) with Agnesian Healthcare Inc, practicing in Fond Du Lac, Wisconsin. 48 Medicare patients in 2024, $3,977 paid; nearly all of their 224 Part D prescriptions were generic (99%). True North Surgical Inc was the largest of 2 companies reporting payments in 2025, $107.04 in all, mostly food and beverage. Lists Ripon Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1134823479 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APNP |
| Sole proprietor | No |
| NPI issued | Mar 29, 2023 |
| Last updated in NPPES | Aug 22, 2023 |
| Certified by provider | Aug 22, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 13779-33 | WI |
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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 48 |
|---|---|
| Services billed | 194 across 21 procedure codes |
| Paid by Medicare | $3,977 |
Part D prescriptions in 2024
| Prescriptions (claims) | 224 · 242 30-day fills |
|---|---|
| Patients | 119 |
| Total drug cost | $2,133 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Agnesian Healthcare IncWaupun, WI · 388 clinicians
Hospital affiliations
- Ripon Medical CenterRipon, WI
- Ssm Health St Agnes Hospital-Fond Du LacFond Du Lac, WI
Industry payments (Open Payments)
- 2025$107.04 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| True North Surgical Inc | $91.99 | 1 |
| Zimmer Biomet Holdings, Inc. | $15.05 | 1 |
What the 2025 payments were for
- Food and Beverage$107.04 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 family nurse practitioners in Fond Du Lac · All family nurse practitioners in Wisconsin