Treacy H. Williams, PMHNP
NPI 1477184299ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Saint Louis, MO
Nurse Practitioner, Psych/Mental Health (PMHNP) with Washington University and 1 other group, practicing in Saint Louis, Missouri. Their prescriptions cost Medicare Part D more than their services did: $144,666 for 1,968 claims, against $20,540 paid for services in 2024. Neurocrine Biosciences, Inc. was the largest of 16 companies reporting payments in 2025, $1,083 in all, mostly food and beverage.
Overview
| NPI | 1477184299 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP |
| Sole proprietor | No |
| NPI issued | Jan 30, 2020 |
| Last updated in NPPES | Jan 5, 2026 |
| Certified by provider | Jan 30, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 2020002310 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 56 |
|---|---|
| Services billed | 292 across 6 procedure codes |
| Paid by Medicare | $20,540 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,968 · 2,991 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $144,666 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Washington UniversitySaint Louis, MO · 3,029 clinicians
- M Seraji MD LLCSaint Louis, MO · 3 clinicians
Industry payments (Open Payments)
- 2025$1,083 · 45 payments from 16 companies
- 2024$745.36 · 38 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Neurocrine Biosciences, Inc. | $157.89 | 9 |
| Teva Pharmaceuticals USA, Inc. | $148.31 | 4 |
| Abbvie Inc. | $122.48 | 4 |
| Axsome Therapeutics, Inc. | $94.96 | 5 |
| Alkermes, Inc. | $93.87 | 4 |
What the 2025 payments were for
- Food and Beverage$978.22 · 44 payments
- Education$104.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 139 psychiatric nurse practitioners in Saint Louis · All psychiatric nurse practitioners in Missouri