Cornelia B. Masak, RN, APNP
NPI 1740319516ActiveIndividual· Nurse Practitioner· Appleton, WI
Nurse Practitioner (RN, APNP) with Womens Health Specialists SC, practicing in Appleton, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $26,085 for 349 claims, against $2,700 paid for services in 2024. Astellas Pharma US Inc was the largest of 7 companies reporting payments in 2025, $278.06 in all, mostly food and beverage. Lists Thedacare Regional Med Ctr - Neenah and 1 other hospital as hospital affiliations.
Overview
| NPI | 1740319516 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | RN, APNP |
| Sole proprietor | No |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Nov 23, 2022 |
| Certified by provider | Nov 23, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 93688 | 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 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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 47 |
|---|---|
| Services billed | 73 across 7 procedure codes |
| Paid by Medicare | $2,700 |
Part D prescriptions in 2024
| Prescriptions (claims) | 349 · 771 30-day fills |
|---|---|
| Patients | 84 |
| Total drug cost | $26,085 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Womens Health Specialists SCAppleton, WI · 27 clinicians
Hospital affiliations
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Industry payments (Open Payments)
- 2025$278.06 · 10 payments from 7 companies
- 2024$291.41 · 15 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $114.40 | 2 |
| Abbvie Inc. | $45.44 | 2 |
| Sage Therapeutics, LLC | $38.39 | 2 |
| Organon LLC | $25.50 | 1 |
| Pharmacosmos Therapeutics Inc. | $24.69 | 1 |
What the 2025 payments were for
- Food and Beverage$179.06 · 9 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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