A. David McCollum, M.D.

A. David McCollum, M.D., is board certified in medical oncology. He is a Diplomate of the American Board of Internal Medicine with subspecialty certifications in hematology and medical oncology. Dr. McCollum has clinical and research interests in cancers of the gastrointestinal tract, including colon, rectal, esophageal, stomach, and pancreatic cancer. Dr. McCollum served on the Texas Oncology Board of Directors between 2007 and 2010 and is a member of the Scientific Planning Committee of Texas Oncology and the Gastrointestinal Cancers Committee of The US Oncology Network.

Dr. McCollum's academic affiliations have included instructor of internal medicine at UT Southwestern Medical School in Dallas, 1998-1999, and instructor of medicine at Harvard Medical School in Boston, 1999-2002. He served as a member of the Gastrointestinal Cancers Research Committee at Dana Farber/Partners Cancer Care from 2000 to 2002. Upon joining Texas Oncology in 2002, he became a member of The US Oncology Network Gastrointestinal Cancers Research Committee.