Our Providers
Michael Douglas, MD
Dr. Douglas joined ARA Health Specialists, formerly Asheville Radiology, in 2002. He is a graduate of Marshall University School of Medicine in Huntington, West Virginia. He completed a Residency in General Surgery at the Mayo Clinic in Rochester, Minnesota. He also received Fellowship training in Vascular Surgery at Southern Illinois University School of Medicine in Springfield, Illinois.
John P. Henretta, M.D.
Dr. Henretta joined ARA Health Specialists, formerly Asheville Radiology, in 2002. He is a graduate of the Medical College of Virginia School of Medicine in Richmond, Virginia. He completed a residency in General Surgery at East Carolina University School of Medicine in Greenville, North Carolina. He also received fellowship training in Vascular and Endovascular Surgery at Southern Illinois University in Springfield, Illinois.
Lemuel B. Kirby, MD
Dr. Kirby joined ARA Health Specialists, formerly Asheville Radiology, in 2004. He is a graduate of Bowman Gray School of Medicine at Wake Forest University in Winston-Salem, North Carolina. He completed a residency in General Surgery at the University of North Carolina at Chapel Hill School of Medicine in Chapel Hill, North Carolina. He also received fellowship training in Vascular Surgery at Georgia Baptist Medical Center in Atlanta, Georgia.
Douglas P. MacMillan Jr., M.D.
Dr. MacMillan joined ARA Health Specialists, formerly Asheville Radiology, in 2006. He is a graduate of the University of North Carolina School of Medicine in Chapel Hill, North Carolina. He completed a residency in General Surgery at Emory University School of Medicine in Atlanta, Georgia. He also received fellowship training in Vascular Surgery at Emory University School of Medicine in Atlanta, Georgia.
W. Kent Williamson, MD
Dr. Williamson is a native of Asheville, North Carolina and joined ARA Health Specialists, formerly Asheville Radiology, in 2016, after practicing in Portland, Oregon. He was the Chief of Surgery at Providence St. Vincent Medical Center, Chairman of the Oregon Medical Board and Clinical Assistant Professor for Vascular Surgery at Oregon Health and Science University. He is a graduate of the University of North Carolina at Chapel Hill and Bowman Gray School of Medicine. He received General and Vascular Surgery residencies at Oregon Health and Sciences University in Portland, Oregon.