Dr. William Besson

Dr. Besson is a lifelong resident of Aiken County.  He graduated as valedictorian from Clemson University where he received a bachelors of science degree in microbiology.  He then attended the University of South Carolina School of Medicine where he received his medical degree in 1989.  His internship and residency were completed at the Medical College of Georgia (now Augusta University).  He is board-certified in Internal Medicine and has been licensed in both South Carolina and Georgia.  He served as Chief of Staff at Aiken Regional Medical Centers from 1996-1998 and has served on ARMC’s Board of Governors.  He enjoys spending time with his family, athletics, and overseeing the family farm.

Dr. David Keisler

Dr. Keisler completed his undergraduate education at The Citadel.  He received his medical degree from the Medical University of South Carolina in Charleston.  He then joined the Army, completing his internship and residency in Internal Medicine at Brooke Army Medical Center in San Antonio, TX.  He went on to complete a fellowship in Gastroenterology at Letterman Army Medical Center in San Francisco, CA.  Dr. Keisler joined Aiken Internal Medicine in 1983.  He remains board-certified in both Gastroenterology and Internal Medicine.  In his free time, he enjoys spending time with his grandchildren, physical fitness, and he writes an article for the Aiken Standard every other week.

Dr. Thomas McCullough

Dr. McCullough is originally from Knoxville, TN.  He moved to South Carolina in 1990 and now considers Aiken his home.  He is a graduate of South Aiken High School.  He then attended the College of Charleston where the graduated with a B.S. in Biology in 2003.  His medical degree was obtained from the University of South Carolina School of Medicine in 2008.  He completed his internship and residency training in Internal Medicine at Carolinas Medical Center in Charlotte, NC, in 2011.  Dr. McCullough joined Aiken Internal Medicine later that year.  He serves on multiple boards in the community and is a member of several professional organizations.  He is also the primary care physician for University of South Carolina Aiken athletes.  Outside of medicine, Dr. McCullough enjoys playing golf, music, exercise, and spending time with his family.