Holly Ann Mast, APRN
NPI 1407101728ActiveIndividual· Nurse Practitioner, Family· Mount Vernon, OH
Nurse Practitioner, Family (APRN) with Knox Community Hospital, practicing in Mount Vernon, Ohio. Their prescriptions cost Medicare Part D more than their services did: $256,910 for 3,289 claims, against $20,495 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 7 companies reporting payments in 2025, $248.94 in all, mostly food and beverage. Lists Knox Community Hospital as a hospital affiliation.
Overview
| NPI | 1407101728 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN |
| Sole proprietor | No |
| NPI issued | Jul 24, 2012 |
| Last updated in NPPES | Mar 24, 2021 |
| Certified by provider | Mar 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 13353 | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 117 |
|---|---|
| Services billed | 471 across 18 procedure codes |
| Paid by Medicare | $20,495 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,289 · 7,223 30-day fills |
|---|---|
| Patients | 333 |
| Total drug cost | $256,910 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Knox Community HospitalMount Vernon, OH · 120 clinicians
Hospital affiliation
- Knox Community HospitalMount Vernon, OH
Other facilities
- Centerwell Home Health IIHome health agency · Mount Vernon, OH
Industry payments (Open Payments)
- 2025$248.94 · 13 payments from 7 companies
- 2024$413.69 · 21 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $47.21 | 3 |
| Amgen Inc. | $41.25 | 2 |
| Abbott Laboratories | $37.61 | 2 |
| Novo Nordisk Inc | $36.98 | 2 |
| Exact Sciences Corporation | $36.15 | 2 |
What the 2025 payments were for
- Food and Beverage$248.94 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 46 family nurse practitioners in Mount Vernon · All family nurse practitioners in Ohio