Catherine E. Grimsley, MSN PMHNP-BC
NPI 1609543933ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Sioux City, IA
Nurse Practitioner, Psych/Mental Health (MSN PMHNP-BC) with Family Health Care of Siouxland PLC, practicing in Sioux City, Iowa. Their prescriptions cost Medicare Part D more than their services did: $243,630 for 1,070 claims, against $8,972 paid for services in 2024. Teva Pharmaceuticals USA, Inc. was the largest of 9 companies reporting payments in 2025, $273.66 in all, mostly food and beverage.
Overview
| NPI | 1609543933 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN PMHNP-BC |
| Sole proprietor | No |
| NPI issued | Aug 25, 2021 |
| Last updated in NPPES | Feb 27, 2026 |
| Certified by provider | Feb 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | G164736 | IA |
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 (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 174 across 10 procedure codes |
| Paid by Medicare | $8,972 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,070 · 1,242 30-day fills |
|---|---|
| Patients | 70 |
| Total drug cost | $243,630 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Family Health Care of Siouxland PLCSioux City, IA · 50 clinicians
Industry payments (Open Payments)
- 2025$273.66 · 16 payments from 9 companies
- 2024$522.21 · 29 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Teva Pharmaceuticals USA, Inc. | $54.72 | 3 |
| Abbvie Inc. | $48.13 | 3 |
| Alkermes, Inc. | $38.50 | 2 |
| Vanda Pharmaceuticals Inc. | $36.15 | 2 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $30.08 | 2 |
What the 2025 payments were for
- Food and Beverage$273.66 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 psychiatric nurse practitioners in Sioux City · All psychiatric nurse practitioners in Iowa