Dr. Peacock is board certified by the American Board of Internal Medicine and the American Board of Radiology (Therapeutic).

Dr. Peacock received his medical degree at UAMS. He completed an internship in general medicine and a residency in Internal Medicine at UAMS. He has also completed residencies in Internal Medicine and Radiation Oncology at the University of Utah.

He has also served as President of the American Cancer Society Arkansas Division and a charter member Board of Director for the Mid-South Division of the American Cancer Society.

Before coming to UAMS, he worked with the West Clinic at the University of Tennessee in Memphis.