Jennifer S. Shimshak, PA-C
NPI 1598028128ActiveIndividual· Physician Assistant, Medical· Onalaska, WI
Physician Assistant, Medical (PA-C) with Gundersen Clinic Ltd, practicing in Onalaska, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $265,579 for 2,375 claims, against $20,962 paid for services in 2024. Lists Gundersen Lutheran Medical Center as a hospital affiliation.
Overview
| NPI | 1598028128 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jun 19, 2012 |
| Last updated in NPPES | Jan 10, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 2922 | WI |
| Physician Assistant | 363A00000X | 2922 | 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 - Physician Assistant (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 213 |
|---|---|
| Services billed | 376 across 12 procedure codes |
| Paid by Medicare | $20,962 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,375 · 5,496 30-day fills |
|---|---|
| Patients | 401 |
| Total drug cost | $265,579 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
Hospital affiliation
- Gundersen Lutheran Medical CenterLa Crosse, WI
Other facilities
- Aveanna Home HealthHome health agency · La Crosse, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Onalaska
- 1790270601
- 1114234580
- 1376548768
- 1417543810
- 1588259022
- 1598049322
- 1760904288
- 1871630947
- 1669531448
- 1902714470