Katie Geiser, NP
NPI 1013648591ActiveIndividual· Nurse Practitioner· Appleton, WI
Nurse Practitioner (NP) with Ascension Medical Group-Fox Valley Wisconsin, Inc, practicing in Appleton, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $344,446 for 1,387 claims, against $6,543 paid for services in 2024. Amgen Inc. was the largest of 8 companies reporting payments in 2025, $256.84 in all, mostly food and beverage. Lists Ascension Calumet Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1013648591 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Jun 23, 2022 |
| Last updated in NPPES | Jun 23, 2022 |
| Certified by provider | Jun 23, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 236993-30 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 118 |
|---|---|
| Services billed | 391 across 21 procedure codes |
| Paid by Medicare | $6,543 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,387 · 3,250 30-day fills |
|---|---|
| Patients | 343 |
| Total drug cost | $344,446 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Ascension Medical Group-Fox Valley Wisconsin, IncAppleton, WI · 259 clinicians
Hospital affiliations
- Ascension Calumet HospitalChilton, WI
- Ascension Ne Wisconsin - St Elizabeth CampusAppleton, WI
- Thedacare Medical Center - Berlin IncBerlin, WI
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Industry payments (Open Payments)
- 2025$256.84 · 13 payments from 8 companies
- 2024$533.28 · 16 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $52.48 | 3 |
| E.R. Squibb & Sons, L.L.C. | $48.85 | 3 |
| Novartis Pharmaceuticals Corporation | $37.87 | 2 |
| Boston Scientific Corporation | $29.19 | 1 |
| Alnylam Pharmaceuticals Inc. | $27.91 | 1 |
What the 2025 payments were for
- Food and Beverage$256.84 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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