Dr. Stephen Miller received his medical degree in 1974 from the University of Toronto Medical School and did his residency in Internal Medicine and Dermatology at the University of Toronto and University of California, San Francisco. He was on staff at Toronto General Hospital and served as an attending physician and lecturer in the department of Dermatology at the University of Toronto. He has been actively involved in clinical research trials in Canada and the United States and is a nationally and internationally recognized leader in Dermatology. Dr. Miller established Dermatology San Antonio in 1999. He is a board certified dermatologist and a member of the American Academy of Dermatology.

Dr. Karis Mical Fagan McCarroll received her medical degree in 1983 from the University of Texas, Galveston, Texas. Dr. McCarroll has had a great deal of experience in private practice and clinical research and continues to play a key role within the practice. Prior to joining this office, Dr. McCarroll had worked in private practice since 1987. Dr. McCarroll joined Dermatology San Antonio in 2001. She is a board certified dermatologist and a member of the American Academy of Dermatology.

Dr. Catherine Tisdall received her medical degree in 2002 from the University of Washington School of Medicine in Seattle, where she graduated with Honors. She completed her residency training in Dermatology and served as Chief Resident at Penn State Milton S. Hershey Medical Center in Hershey, Pennsylvania. She began her career as an Assistant Professor of Dermatology at Penn State before moving to San Antonio to join Dermatology San Antonio, in July 2007. Dr. Tisdall has presented at the national dermatology meeting, published articles in peer-reviewed journals and has been involved in resident and medical student education. She is a board certified dermatologist and a member of the American Academy of Dermatology.