David Clair Marsh, CFNP
NPI 1588627822ActiveIndividual· Nurse Practitioner· Maryville, TN
Nurse Practitioner (CFNP) in Maryville, Tennessee, trained at East Tennessee State University Quillen College of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $718,356 for 994 claims, against $2,408 paid for services in 2024. Janssen Biotech, Inc. was the largest of 13 companies reporting payments in 2025, $1,906 in all, mostly food and beverage.
Overview
| NPI | 1588627822 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CFNP |
| Sole proprietor | No |
| NPI issued | Apr 8, 2006 |
| Last updated in NPPES | Aug 4, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | RN0000077905 | TN |
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 (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 25 |
|---|---|
| Services billed | 27 across 4 procedure codes |
| Paid by Medicare | $2,408 |
Part D prescriptions in 2024
| Prescriptions (claims) | 994 · 1,643 30-day fills |
|---|---|
| Patients | 237 |
| Total drug cost | $718,356 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | East Tennessee State University Quillen College of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Blount Gastroenterology Assoc PCMaryville, TN · 6 clinicians
Hospital affiliation
- Blount Memorial HospitalMaryville, TN
Industry payments (Open Payments)
- 2025$1,906 · 78 payments from 13 companies
- 2024$1,310 · 73 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $428.40 | 10 |
| Abbvie Inc. | $428.01 | 24 |
| Madrigal Pharmaceuticals | $215.82 | 3 |
| Ardelyx, Inc. | $160.38 | 7 |
| Aimmune Therapeutics, Inc. | $156.90 | 7 |
What the 2025 payments were for
- Food and Beverage$1,821 · 77 payments
- Education$84.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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