William Michael Gassmann, MS RN NPP
NPI 1033390885ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Clifton Springs, NY
Nurse Practitioner, Psych/Mental Health (MS RN NPP) with Clifton Springs Sanitarium Co, practicing in Clifton Springs, New York. Their prescriptions cost Medicare Part D more than their services did: $282,209 for 3,205 claims, against $4,372 paid for services in 2024. Indivior Inc. reported $15.57 in payments in 2025, mostly food and beverage. Lists Clifton Springs Hospital and Clinic and 1 other hospital as hospital affiliations.
Overview
| NPI | 1033390885 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MS RN NPP |
| Sole proprietor | No |
| NPI issued | Nov 21, 2007 |
| Last updated in NPPES | Feb 19, 2025 |
| Certified by provider | Feb 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 401059 | NY |
| Registered Nurse | 163W00000X | 4929851 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 86 across 5 procedure codes |
| Paid by Medicare | $4,372 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,205 · 4,037 30-day fills |
|---|---|
| Patients | 215 |
| Total drug cost | $282,209 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Clifton Springs Sanitarium CoClifton Springs, NY · 221 clinicians
Hospital affiliations
- Clifton Springs Hospital and ClinicClifton Springs, NY
- Rochester General HospitalRochester, NY
Industry payments (Open Payments)
- 2025$15.57 · 1 payment from 1 company
- 2024$18.19 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Indivior Inc. | $15.57 | 1 |
What the 2025 payments were for
- Food and Beverage$15.57 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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