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 Castillo Sr., M.D.

Board-Certified in Internal Medicine & Gastroenterology

Dr Samuel F. Castillo is a board-certified gastroenterologist with over 20 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:

◈ Medical Degree — Universidad Autónoma de Madrid, Spain

◈ Residency — Detroit Receiving Hospital, Wayne State University

◈ Fellowships — Lahey Clinic Medical Center (Tufts University) & Detroit Medical Center

Dr. David S. Jarava

Gastroenterology - Digestive Health, Internal Medicine

Dr. David S. Jarava is a board-certified gastroenterologist born and raised in the Chicago Area. He did his residency at the University of Virginia and his GI fellowship at the University of New Mexico. Dr Jarava is passionate about patient care and enjoys the clinical side of practicing medicine as well as the procedural side of colonoscopies and endoscopies. He finds getting to the root cause of someone’s ailments and helping them regain better health very rewarding. A large part of Dr. Jarava’s practice is concentrated on colorectal cancer screening, acid reflux and inflammatory bowel disease.