Mark D. Clark, FNP
NPI 1285631887ActiveIndividual· Nurse Practitioner, Acute Care· Gainesville, GA
Nurse Practitioner, Acute Care (FNP) with Northeast Georgia Diagnostic Associates and Clinic, LLC, practicing in Gainesville, Georgia. Their prescriptions cost Medicare Part D more than their services did: $3,125,381 for 3,121 claims, against $38,293 paid for services in 2024. Regeneron Pharmaceuticals, Inc. was the largest of 32 companies reporting payments in 2025, $2,919 in all, mostly food and beverage.
Overview
| NPI | 1285631887 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Jun 29, 2005 |
| Last updated in NPPES | Feb 5, 2021 |
| Certified by provider | Feb 5, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | RN128712 | GA |
| Nurse Practitioner | 363L00000X | RN128712 | GA |
| Nurse Practitioner, Adult Health | 363LA2200X | RN128712 | GA |
| Nurse Practitioner, Gerontology | 363LG0600X | RN128712 | GA |
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 (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 249 |
|---|---|
| Services billed | 611 across 5 procedure codes |
| Paid by Medicare | $38,293 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,121 · 4,726 30-day fills |
|---|---|
| Patients | 401 |
| Total drug cost | $3,125,381 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Northeast Georgia Diagnostic Associates and Clinic, LLCDuluth, GA · 81 clinicians
Industry payments (Open Payments)
- 2025$2,919 · 88 payments from 32 companies
- 2024$1,759 · 74 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Pharmaceuticals, Inc. | $932.00 | 1 |
| Daiichi Sankyo Inc. | $163.95 | 4 |
| Janssen Biotech, Inc. | $163.21 | 9 |
| Bayer Healthcare Pharmaceuticals Inc. | $140.42 | 5 |
| Merck Sharp & Dohme LLC | $131.39 | 5 |
What the 2025 payments were for
- Food and Beverage$1,874 · 85 payments
- Consulting Fee$932.00 · 1 payment
- Education$113.03 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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