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Meet Our Physician

At Chicago GI, we know that health concerns don’t follow a clock or a calendar. The fact is, many medical problems are time-sensitive… and often urgent. Which is why we provide not just quality care but also get you in fast and care for all your needs quickly and efficiently. We are committed to making our many services immediately available, from routine and specialty care to urgent situations.

Dr. Samuel F. Castillo, M.D

Board-Certified in Internal Medicine & Gastroenterology

Dr. Samuel F. Castillo is a board-certified gastroenterologist with over 15+ years of experience in the Chicago area. He did his residency at the Mayo Clinic and his GI fellowship at the University of Arizona. Dr. Castillo is highly skilled, compassionate, and dedicated. He does therapeutic endoscopy and ERCP along with colonoscopy and endoscopy. He is able to quickly assess patients, manage short or long-term care, and help people return to good health. Dr. Castillo has a wide experience in colorectal cancers, liver issues, inflammatory bowel disease, and abdominal pain.

Education & Training:

◈ Board-certified in internal medicine and gastroenterology. In practice since 2009

Medical degree: University of Illinois College of Medicine, Rockford, Ill.

Internal Medicine Residency: Mayo Clinic College of Medicine, Rochester, Minn.

Gastroenterology Fellowship: University of Arizona

Affiliated Hospitals Phoenix

Involved in research, published papers