Melanie D. Griffith
NPI 1538732797ActiveIndividual· Nurse Practitioner· Knoxville, TN
Nurse Practitioner with Gastrointestinal Associates PC, practicing in Knoxville, Tennessee. Their prescriptions cost Medicare Part D more than their services did: $722,592 for 952 claims, against $33,247 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $1,422 in all, mostly food and beverage. Lists Fort Sanders Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538732797 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jul 23, 2021 |
| Last updated in NPPES | Jul 28, 2021 |
| Certified by provider | Jul 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 29904 | TN |
| Nurse Practitioner | 363L00000X | 149310 | 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 | 384 |
|---|---|
| Services billed | 537 across 8 procedure codes |
| Paid by Medicare | $33,247 |
Part D prescriptions in 2024
| Prescriptions (claims) | 952 · 2,071 30-day fills |
|---|---|
| Patients | 299 |
| Total drug cost | $722,592 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Gastrointestinal Associates PCKnoxville, TN · 33 clinicians
Hospital affiliations
- Fort Sanders Regional Medical CenterKnoxville, TN
- Methodist Medical Center of Oak RidgeOak Ridge, TN
- Parkwest Medical CenterKnoxville, TN
- Physicians Regional Medical CenterPowell, TN
- University Health System, IncKnoxville, TN
Industry payments (Open Payments)
- 2025$1,422 · 76 payments from 13 companies
- 2024$1,416 · 90 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $360.84 | 22 |
| Ardelyx, Inc. | $249.11 | 11 |
| Janssen Biotech, Inc. | $186.77 | 10 |
| Ferring Pharmaceuticals Inc. | $104.78 | 5 |
| Aimmune Therapeutics, Inc. | $96.37 | 5 |
What the 2025 payments were for
- Food and Beverage$1,422 · 76 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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