Nathaniel Clark, P.A.
NPI 1063660074ActiveIndividual· Physician Assistant· Carbondale, IL
Physician Assistant (P.A.) with Deaconess Illinois Specialty Clinic, Inc., practicing in Carbondale, Illinois. Their prescriptions cost Medicare Part D more than their services did: $654,126 for 3,118 claims, against $86,350 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 16 companies reporting payments in 2025, $1,413 in all, mostly food and beverage. Lists Ferrell Hospital Community Foundations and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1063660074 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A. |
| Sole proprietor | No |
| NPI issued | Sep 3, 2008 |
| Last updated in NPPES | Dec 21, 2022 |
| Certified by provider | Dec 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 085003278 | IL |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 085-003278 | IL |
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 - Physician Assistant (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 710 |
|---|---|
| Services billed | 1,818 across 20 procedure codes |
| Paid by Medicare | $86,350 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,118 · 6,059 30-day fills |
|---|---|
| Patients | 480 |
| Total drug cost | $654,126 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Deaconess Illinois Specialty Clinic, Inc.Harrisburg, IL · 148 clinicians
Hospital affiliations
- Ferrell Hospital Community FoundationsEldorado, IL
- Heartland Regional Medical CenterMarion, IL
- Herrin HospitalHerrin, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Ssm Health Saint Louis University HospitalSaint Louis, MO
Industry payments (Open Payments)
- 2025$1,413 · 71 payments from 16 companies
- 2024$2,006 · 94 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $280.25 | 11 |
| Pfizer Inc. | $196.80 | 11 |
| Amgen Inc. | $177.65 | 11 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $160.50 | 7 |
| Novartis Pharmaceuticals Corporation | $108.83 | 6 |
What the 2025 payments were for
- Food and Beverage$1,413 · 71 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 68 physician assistants in Carbondale · All physician assistants in Illinois