Summary

Dr. Stephen Antonik treats colon polyps, hemorrhoids, and diverticular disease, and performs lower GI endoscopy, colonoscopy, and upper GI endoscopy. He practices gastroenterology and internal medicine and has 24 years of experience. He speaks English and Spanish.

Dr. Antonik earned his medical degree from Loyola University of Chicago Stritch School of Medicine and sees patients in Leesburg and Reston, Virginia. He is affiliated with Inova Loudoun Hospital Center and Reston Hospital Center. Patients on Vitals rate Dr. Antonik 3.93 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.9
  • 24 years of experience
  • speaks English, Spanish
  • Loyola University Of Chicago Stritch School Of Medicine
  • 5 written reviews
  • 2 specialties
  • 17 areas of expertise
  • 2 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Stephen John Antonik has 4 locations

Gastroenterology Associates Pllc

19500 Sandridge Way Ste 470Leesburg, VA 20176
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Reston Hospital Center

1850 Town Center PkwyReston, VA 20190

Inova Loudoun Hospital Center

44045 Riverside PkwyLeesburg, VA 20176

Inova Loudon Ambulatory Surgery Center

44035 Riverside Pkwy Ste 200Leesburg, VA 20176
Mon6:00 am - 5:00 pm
Tue6:00 am - 5:00 pm
Wed6:00 am - 5:00 pm
Thu6:00 am - 5:00 pm
Fri6:00 am - 5:00 pm
SatClosed
SunClosed

Compare with Similar Doctors

Dr. Stephen John Antonik, MD
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Dr. Stephen John Antonik, MDBrooke Ann Spencer, FNPBC, MSNShandiz Shahbazi, MDJi Soo Choi, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.9 
4.9 
4.6 
0 
24 Years of Experience 13 Years of Experience 8 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English, Farsi Speaks English
Leesburg , VAMcLean , VAMcLean , VASacramento , CA
Med School: Loyola University Of Chicago Stritch School Of Medicine Med School: Virginia Commonwealth University Med School: New York University
Current Profile
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Insurance Plans Accepted by Dr. Stephen John Antonik

  • Accepts Medicare

Medical Specialties

Dr. Stephen John Antonik has the following 2 specialties

Specialty Expertise

Dr. Stephen John Antonik has the following 17 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Esophagoscopy
  • Gastrointestinal Diseases (GI Diseases)
  • Gastroscopy
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Nutritional Support
  • Sigmoidoscopy
  • Ulcerative Colitis

Certifications, License, & Education

24 Years Experience

Dr. Stephen John Antonik holds an expired medical license in the state of Virginia.

Medical License

Medical Doctor with an expired medical license in the state of Virginia that expired in 2026.

Education & Training

Medical School

Graduated from Loyola University Of Chicago Stritch School Of Medicine in 2002.

NPI Number

Dr. Antonik's NPI number is 1770567257.

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Frequently Asked Questions

Is Dr. Stephen Antonik accepting new patients?
Dr. Stephen Antonik is accepting new patients on Vitals. View Dr. Stephen Antonik's profile on Vitals to make an appointment.
Does Dr. Stephen Antonik accept my insurance?
You can see the insurance plans that Dr. Stephen Antonik accepts on their Vitals profile.
How can I make an appointment with Dr. Stephen Antonik?
You can find contact information for Dr. Stephen Antonik here on Vitals.
What languages does Dr. Stephen Antonik speak?
Dr. Stephen Antonik speaks English and Spanish.
Does Dr. Stephen Antonik accept virtual/telehealth appointments?
Dr. Stephen Antonik has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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