Margaret Susan Mullin, PMHNP
NPI 1407292691ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Terre Haute, IN
Nurse Practitioner, Psych/Mental Health (PMHNP) with Union Associated Physicians Clinic, LLC, practicing in Terre Haute, Indiana. Their prescriptions cost Medicare Part D more than their services did: $398,511 for 2,366 claims, against $9,550 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 16 companies reporting payments in 2025, $1,364 in all, mostly food and beverage. Lists Union Hospital Inc as a hospital affiliation.
Overview
| NPI | 1407292691 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP |
| Sole proprietor | No |
| NPI issued | May 15, 2013 |
| Last updated in NPPES | Feb 15, 2023 |
| Certified by provider | Feb 15, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 28064959A | IN |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 68 |
|---|---|
| Services billed | 175 across 4 procedure codes |
| Paid by Medicare | $9,550 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,366 · 3,548 30-day fills |
|---|---|
| Patients | 182 |
| Total drug cost | $398,511 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Union Associated Physicians Clinic, LLCTerre Haute, IN · 230 clinicians
Hospital affiliation
- Union Hospital IncTerre Haute, IN
Industry payments (Open Payments)
- 2025$1,364 · 44 payments from 16 companies
- 2024$796.84 · 33 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $199.11 | 5 |
| Abbvie Inc. | $191.72 | 9 |
| E.R. Squibb & Sons, L.L.C. | $172.81 | 4 |
| Vanda Pharmaceuticals Inc. | $146.11 | 5 |
| Supernus Pharmaceuticals, Inc. | $121.60 | 1 |
What the 2025 payments were for
- Food and Beverage$1,362 · 43 payments
- Education$1.20 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 psychiatric nurse practitioners in Terre Haute · All psychiatric nurse practitioners in Indiana