At Chicago GI, our Dr. Samuel F. Castillo provides comprehensive, state-of-the-art treatment for all gastrointestinal and liver conditions.
• All major insurance accepted
• Fast, convenient access to Physician and Nurse Practitioner visits
Chicago Gastroenterology is a Gastroenterology, Hepatology, and Therapeutic Endoscopy practice committed to delivering excellence in patient care using advanced technology and the latest medical standards.
We focus on thorough evaluations, accurate diagnosis, and personalized treatment, ensuring every patient receives the time, attention, and compassion they deserve
We practice compassionate care by providing individualized attention, listening carefully, and taking the time each patient needs during their visit. We see every patient as a whole person—body, mind, and soul. Our emphasis is always on quality care, delivered through a holistic approach that respects each patient’s dignity.
Comprehensive evaluations and evidence-based treatments.
Continuous learning and membership in GI associations.
Strict sterilization and infection-control protocols.
treating each patient with respect, dignity, and individualized care.
At Chicago GI, our physicians deliver expert, patient-focused digestive care backed by top professional credentials. They are active members of the American Gastroenterological Association (AGA), American College of Gastroenterology (ACG), and American Society for Gastrointestinal Endoscopy (ASGE)—ensuring they stay current with the latest guidelines and advancements in the field.
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. 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.
My name is Natalia Torres, and I am a Nurse Practitioner at Chicago Gi. My background is in emergency care and family practice. However, my passion is Gastroenterology, and I have worked at Chicago GI since 2021. A large part of my work is colon cancer prevention and screening. I have ample openings for colon cancer screening consults and can schedule colonoscopies with the Doctors within a few weeks.
Comprehensive evaluation and treatment for all digestive and liver conditions.
Our board-certified gastroenterologists provide fast, thorough, and compassionate care — from routine evaluations to urgent concerns.
Same-day appointments available.
At Chicago GI, we understand that digestive health issues don’t wait for the “right” time. Symptoms can be sudden, stressful, and urgent—which is why our team is committed to delivering high-quality care without the long wait. Whether you need routine screening, specialty evaluation, or prompt attention for sudden symptoms, we make exceptional GI care available right away.
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. In fact, we are committed to making our many services immediately available, from routine and specialty care to urgent situations.
Why Patients Choose Chicago GI
At Chicago GI, we understand that digestive health issues don’t wait for the “right” time. Symptoms can be sudden, stressful, and urgent—which is why our team is committed to delivering high-quality care without the long wait. Whether you need routine screening, specialty evaluation, or prompt attention for sudden symptoms, we make exceptional GI care available right away.
Why Patients Choose Chicago GI
Our clinic performs comprehensive diagnostic and therapeutic procedures, including:
Procedures will be performed at one of the following locations, depending on insurance coverage and medical considerations:
2233 W. Division St., 9th Floor, Chicago, IL 60622 Phone: (312) 770-2840
331 W. Surf St., Suite 506, Chicago, IL 60657 Phone: (312) 682-6424
We accept Medicare and all major PPO plans, including:
Coverage varies by plan. Please call us to confirm benefits.
We’re here to help you schedule your visit or answer any questions.