Clarissa M. McCullar, NP
NPI 1689624439ActiveIndividual· Nurse Practitioner, Family· Oak Ridge, TN
Nurse Practitioner, Family (NP) with Summit Medical Group, PLLC, practicing in Oak Ridge, Tennessee. Their prescriptions cost Medicare Part D more than their services did: $269,298 for 4,111 claims, against $78,430 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $775.75 in all, mostly food and beverage. Lists Methodist Medical Center of Oak Ridge as a hospital affiliation.
Overview
| NPI | 1689624439 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | Mar 19, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 7012 | TN |
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 (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 402 |
|---|---|
| Services billed | 3,117 across 118 procedure codes |
| Paid by Medicare | $78,430 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,111 · 6,881 30-day fills |
|---|---|
| Patients | 696 |
| Total drug cost | $269,298 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Summit Medical Group, PLLCKnoxville, TN · 652 clinicians
Hospital affiliation
- Methodist Medical Center of Oak RidgeOak Ridge, TN
Other facilities
- Amedisys Home Health CareHome health agency · Knoxville, TN
Industry payments (Open Payments)
- 2025$775.75 · 52 payments from 16 companies
- 2024$592.72 · 38 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $212.50 | 16 |
| Glaxosmithkline, LLC. | $198.11 | 14 |
| Astrazeneca Pharmaceuticals LP | $77.01 | 4 |
| Dynavax Technologies Corporation | $57.50 | 3 |
| Pfizer Inc. | $39.18 | 2 |
What the 2025 payments were for
- Food and Beverage$775.75 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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