Sydnie Maree Gamroth, PMHNP
NPI 1992460539ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Rapid City, SD
Nurse Practitioner, Psych/Mental Health (PMHNP) with Great Plains Tribal Chairmen's Health Board, practicing in Rapid City, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $105,619 for 495 claims, against $12,123 paid for services in 2024. Alkermes, Inc. was the largest of 5 companies reporting payments in 2025, $688.88 in all, mostly food and beverage.
Overview
| NPI | 1992460539 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP |
| Sole proprietor | No |
| NPI issued | Nov 8, 2021 |
| Last updated in NPPES | Nov 8, 2021 |
| Certified by provider | Sep 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | CP002204 | SD |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 29 |
|---|---|
| Services billed | 799 across 9 procedure codes |
| Paid by Medicare | $12,123 |
Part D prescriptions in 2024
| Prescriptions (claims) | 495 · 497 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $105,619 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Great Plains Tribal Chairmen's Health BoardRapid City, SD · 67 clinicians
Industry payments (Open Payments)
- 2025$688.88 · 6 payments from 5 companies
- 2024$528.06 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alkermes, Inc. | $198.46 | 2 |
| Teva Pharmaceuticals USA, Inc. | $125.00 | 1 |
| E.R. Squibb & Sons, L.L.C. | $124.65 | 1 |
| Axsome Therapeutics, Inc. | $124.65 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $116.12 | 1 |
What the 2025 payments were for
- Food and Beverage$688.88 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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