Nathaniel Mills Preston
NPI 1417658139ActiveIndividual· Physician Assistant· Newburgh, IN
Physician Assistant with St Marys Medical Group LLC and 1 other group, practicing in Newburgh, Indiana. 62 Medicare patients in 2024, $8,024 paid; nearly all of their 206 Part D prescriptions were generic (91%). Inspire Medical Systems, Inc. was the largest of 2 companies reporting payments in 2025, $158.63 in all, mostly food and beverage. Lists Ascension St Vincent Evansville and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1417658139 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Mar 10, 2023 |
| Last updated in NPPES | Aug 20, 2024 |
| Certified by provider | Aug 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 10004499A | IN |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 62 |
|---|---|
| Services billed | 117 across 17 procedure codes |
| Paid by Medicare | $8,024 |
Part D prescriptions in 2024
| Prescriptions (claims) | 206 · 466 30-day fills |
|---|---|
| Patients | 120 |
| Total drug cost | $8,847 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2024 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- St Marys Medical Group LLCEvansville, IN · 228 clinicians
- Easter Seals Rehabilitation Center IncEvansville, IN · 42 clinicians
Hospital affiliations
- Ascension St Vincent EvansvilleEvansville, IN
- Ascension St Vincent WarrickBoonville, IN
- Deaconess Hospital IncEvansville, IN
Industry payments (Open Payments)
- 2025$158.63 · 2 payments from 2 companies
- 2024$137.52 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Inspire Medical Systems, Inc. | $92.52 | 1 |
| Astrazeneca Pharmaceuticals LP | $66.11 | 1 |
What the 2025 payments were for
- Food and Beverage$158.63 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 45 physician assistants in Newburgh · All physician assistants in Indiana