Nathan Philip Seigrist, DO
NPI 1780382465ActiveIndividual· General Practice· O Fallon, IL
General Practice (DO) in O Fallon, Illinois, licensed in FL and IL, with an NPI issued in February 2023. Part D covered 14 prescriptions written in 2024, 100% of them generic. Astrazeneca Pharmaceuticals LP reported $31.94 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1780382465 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Feb 21, 2023 |
| Last updated in NPPES | Jun 24, 2026 |
| Certified by provider | Jun 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | OS23985 | FL |
| Military Health Care Provider | 171000000X | — | — |
| Student in an Organized Health Care Education/Training Program | 390200000X | 125.084301 | IL |
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 Order and Referring Only - Family Practice (IL) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 14 · 14 30-day fills |
|---|---|
| Total drug cost | $69.27 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$31.94 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $31.94 | 1 |
What the 2025 payments were for
- Food and Beverage$31.94 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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