John M. Williamson, PMHNP
NPI 1740847946ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Westerville, OH
Nurse Practitioner, Psych/Mental Health (PMHNP) with Serenity Behavioral Health Services, Inc., practicing in Westerville, Ohio. Part D covered 309 prescriptions written in 2024, 89% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $10,370 in all, mostly speaking and faculty fees.
Overview
| NPI | 1740847946 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP |
| Sole proprietor | Yes |
| NPI issued | May 22, 2019 |
| Last updated in NPPES | Aug 26, 2026 |
| Certified by provider | Aug 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | APRN.CNP.025091 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 309 · 319 30-day fills |
|---|---|
| Patients | 36 |
| Total drug cost | $47,572 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Serenity Behavioral Health Services, Inc.Westerville, OH · 14 clinicians
Industry payments (Open Payments)
- 2025$10,370 · 35 payments from 4 companies
- 2024$12,895 · 48 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $9,980 | 29 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $152.89 | 4 |
| E.R. Squibb & Sons, L.L.C. | $121.03 | 1 |
| Otsuka America Pharmaceutical, Inc. | $115.56 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$9,625 · 7 payments
- Food and Beverage$744.56 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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