Gastroenterology at OSF Medical Group

Our gastroenterology experts, Dr. Mark Klucka and Dr. Sai Raghavapuram, along with certified physician assistant Shona Quick and nurse practitioner Randi Heidbrink, provide general and specialized gastroenterology care for adults.

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OSF HealthCare Medical Group - Gastroenterology


2 Saint Anthony's Way, Suite 305
Alton, Illinois 62002

Phone: (618) 465-2761

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Our Services

Our team of specialists use an integrated team approach to health care to consider all treatment options available. Some common services include:

• Barrett's Esophagus treatment
• Celiac disease
• Crohn's
• Colon cancer screening
• Endoscopy
• Esophageal disorders
• Gallbladder and biliary tract disorders
• GERD (Gastroesophageal Reflux Disease)
• Hepatitis
• Irritable bowel syndrome
• Liver diseases
• Liver disease - Hepatitis C
• Pancreatic disease
• Stomach and intestinal issues
• Ulcers
• Ulcerative Colitis

Meet the Providers

Mark Klucka, DO

Dr. Klucka is board certified in gastroenterology and internal medicine. He completed medical school at Texas College of Osteopathic Medicine in Fort Worth, Texas, and his residencies at Detroit Osteopathic Hospital in Highland Park, Michigan and Mercy Catholic Medical Center in Darby, Pennsylvania.

Sai Raghavapuram, MD

A graduate of Osmania Medical College in Hyderabad, India, Dr. Raghavapuram completed his internal medical residency and gastroenterology/hepatology fellowship at the University of Arkansas for the Medical Sciences in Little Rock, Arkansas.

Randi Heidbrink, FNP-BC

A family nurse practitioner, Randi completed her medical education at Maryville University in St. Louis. She is certified by the American Academy of Nurse Practitioners.

Shona Quick, FNP-BC

Shona completed her medical education at Southern Illinois University at Edwardsville in Edwardsville, Illinois. She is board certified by the National Commission on Certification of Physician Assistants.

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