Gretchen Hansell Collum, FNP-BC
NPI 1568508141ActiveIndividual· Nurse Practitioner, Primary Care· Lexington, SC
Nurse Practitioner, Primary Care (FNP-BC) with Lexington Health Inc, practicing in Lexington, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $94,244 for 1,446 claims, against $28,980 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 24 companies reporting payments in 2025, $1,071 in all, mostly food and beverage. Lists Lexington Medical Center as a hospital affiliation.
Overview
| NPI | 1568508141 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-BC |
| Sole proprietor | No |
| NPI issued | Jan 30, 2007 |
| Last updated in NPPES | Jun 25, 2024 |
| Certified by provider | Jun 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Primary Care Primary | 363LP2300X | 2771 | SC |
| Nurse Practitioner, Family | 363LF0000X | 2771 | SC |
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 (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 320 |
|---|---|
| Services billed | 640 across 27 procedure codes |
| Paid by Medicare | $28,980 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,446 · 2,447 30-day fills |
|---|---|
| Patients | 461 |
| Total drug cost | $94,244 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Lexington Health IncWest Columbia, SC · 904 clinicians
Hospital affiliation
- Lexington Medical CenterWest Columbia, SC
Industry payments (Open Payments)
- 2025$1,071 · 62 payments from 24 companies
- 2024$1,261 · 71 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $178.60 | 15 |
| Novo Nordisk Inc | $103.91 | 6 |
| Amgen Inc. | $85.86 | 5 |
| Pfizer Inc. | $84.78 | 5 |
| Exact Sciences Corporation | $55.73 | 3 |
What the 2025 payments were for
- Food and Beverage$1,071 · 62 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other primary care nurse practitioners in Lexington
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