Mary C. Nading, PA-C
NPI 1326412719ActiveIndividual· Physician Assistant· Waterloo, IA
Physician Assistant (PA-C) in Waterloo, Iowa, licensed in IA, with an NPI issued in November 2015. Their prescriptions cost Medicare Part D more than their services did: $306,244 for 1,623 claims, against $49,965 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 4 companies reporting payments in 2025, $243.58 in all, mostly food and beverage. Lists Allen Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1326412719 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Nov 23, 2015 |
| Last updated in NPPES | May 1, 2023 |
| Certified by provider | May 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 079183 | IA |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 448 |
|---|---|
| Services billed | 813 across 15 procedure codes |
| Paid by Medicare | $49,965 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,623 · 2,229 30-day fills |
|---|---|
| Patients | 592 |
| Total drug cost | $306,244 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Physician Assistant |
Hospital affiliations
- Allen HospitalWaterloo, IA
- Buchanan County Health CenterIndependence, IA
- Mercyone Waterloo Medical CenterWaterloo, IA
- Waverly Health CenterWaverly, IA
Industry payments (Open Payments)
- 2025$243.58 · 4 payments from 4 companies
- 2024$214.27 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $76.61 | 1 |
| Genzyme Corporation | $63.16 | 1 |
| Madrigal Pharmaceuticals | $60.72 | 1 |
| Regeneron Healthcare Solutions, Inc. | $43.09 | 1 |
What the 2025 payments were for
- Food and Beverage$243.58 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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