About Us

Stephen C. Marcum, M.D.

Stephen C. Marcum, M.D.

Diplomate of American Board of Internal Medicine
Board Certified in Internal Medicine - 1984
Board Certified in Gastroenterology - 1989
B.A. Degree - Biology
Franklin and Marshall College – 1977, Lancaster, PA
M.D. Degree
Thomas Jefferson Medical College – 1981, Philadelphia, PA
Internal Medicine Internship and Residency
Washington Hospital Center – 1984, Washington, DC
Gastroenterology Fellowship
John Hopkins Hospital – 1986, Baltimore, MD

Dr. Marcum has been in private practice in the Clear Lake area since 1986. He has held multiple leadership positions at local hospitals including Chief of Staff at both Clear Lake Regional Medical Center and Mainland Medical Center. His clinical interests include colon cancer prevention, inflammatory bowel disease, GERD and swallowing disorders, and irritable bowel syndrome. He is married with three children. He enjoys traveling and exploring the Texas Hill Country.

Richard M. Warneke, M.D., M.S.

Richard M. Warneke, M.D., M.S.

Diplomate of American Board of Internal Medicine
Board Certified in Gastroenterology
B.S. Degree - Biology
Trinity University, 1995 Cum Laude
M.D. Degree
Texas Tech University School of Medicine - 1999
Internal Medicine Internship/Residency
University of Texas Medical Branch Galveston 2002
Gastroenterology Fellowship
University of Texas Medical Branch Galveston 2005
Advanced Therapeutic Fellowship
University of Illinois - Chicago 2006

Dr. Warneke, a native Texan, was born and raised in Southeast Houston. He was been practicing Gastroenterology in the area since 2006. His clinical interests include colorectal cancer prevention, inflammatory bowel disease, liver disease, and therapeutic endoscopy.

He and his wife have 3 children. In his free time, he enjoys spending time with his family, playing guitar, and cycling.