Stephen J. Antonik, MD
NPI 1770567257ActiveIndividual· Internal Medicine, Gastroenterology· Leesburg, VA
Internal Medicine, Gastroenterology (MD) in Leesburg, Virginia, trained at Loyola University of Chicago, Stritch School of Medicine (class of 2002). In 2024 Medicare paid $28,521 for 122 patients, and Part D covered 166 of their prescriptions, 80% of them generic.
Overview
| NPI | 1770567257 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 30, 2005 |
| Last updated in NPPES | Oct 6, 2021 |
| Certified by provider | Oct 6, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 0101245281 | VA |
| Internal Medicine | 207R00000X | 036113018 | 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 - Gastroenterology (DC); Practitioner - Gastroenterology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 122 |
|---|---|
| Services billed | 319 across 13 procedure codes |
| Paid by Medicare | $28,521 |
Part D prescriptions in 2024
| Prescriptions (claims) | 166 · 305 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $15,398 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Gastroenterology |
Hospital affiliations
- Inova Loudoun HospitalLeesburg, VA
- Reston Hospital CenterReston, VA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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