Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Stephen J Antonik, MD

Individual provider Gastroenterology Physician · NPI 1770567257

Stephen J Antonik, MD is a Gastroenterology in Leesburg, Virginia. Graduated from Loyola University of Chicago, Stritch School of Medicine in 2002, 24 years ago. Accepts Medicare assignment. Licensed in Illinois and Virginia.

Years since qualifying
24
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL, VA
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

19500 Sandridge Way Ste 470
Leesburg, VA 20176-3694
Phone: (703) 771-9001
Fax: (703) 771-9076
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 0101245281 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036113018 (IL)

Record details

NPI number1770567257
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 30, 2005
Last updated in NPPESOctober 6, 2021
Certification dateOctober 6, 2021
Mailing address19500 Sandridge Way Ste 470, Leesburg, VA 20176-3694

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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