Diplomate of American Board of Internal MedicineBoard Certified in Internal Medicine - 1984
Board Certified in Gastroenterology - 1989
B.A. Degree - BiologyFranklin and Marshall College – 1977, Lancaster, PA
M.D. DegreeThomas Jefferson Medical College – 1981, Philadelphia, PA
Internal Medicine Internship and ResidencyWashington Hospital Center – 1984, Washington, DC
Gastroenterology FellowshipJohn 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.