Our Team

Stephen Miller, MD

Dr. Stephen Miller received his medical degree 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 practices surgical, medical, and cosmetic dermatology. He provides the full spectrum of dermatological care, from skin cancer detection and treatment to cosmetic dermatology. Dr. Miller has advanced training in cutting edge non-invasive aesthetic procedures and treatments. He has trained with top thought leaders from around the world, allowing him to offer his patients the newest advancements in cosmetic dermatology. He is a board certified dermatologist and a member of the American Academy of Dermatology and American Society for Dermatologic Surgery. Dr. Miller has been named in Scene Magazine as one of S.A. Best Doctors and Texas Monthly Super Doctors, as well as being named a member of the Leaders Society by the Dermatology Foundation and America’s Top Dermatologists by the Consumer Research Council.

Catherine Tisdall, MD

Dr. Catherine Tisdall received her medical degree and graduated with Honors in 2002 from the University of Washington School of Medicine in Seattle. 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 Milton S. Hershey Medical center where she was involved in medical student and resident education. In July 2007 she moved to San Antonio with her family and joined Dermatology San Antonio where she has since become partner in the practice. She is actively involved in dermatologic clinical research and has published articles in peer-reviewed journals. Dr. Tisdall practices general, surgical, and cosmetic dermatology seeing patients of all ages. She has advanced training in the latest cosmetic techniques and products and offers a wealth of experience and training to all her patients. She enjoys providing care for the full breadth of dermatologic concerns including acne, psoriasis, patch testing, cosmetic procedures, and skin cancer detection and treatment. She is a board certified dermatologist and a member of the American Academy of Dermatology, American Contact Dermatitis Society, American Society for Dermatologic Surgery, Texas Dermatological Society, and the San Antonio Dermatological Society. Dr. Tisdall has been named in Texas Monthly as one of the state’s “Rising Stars”, as well as being named in S.A. Scene as one of the “Best of 2013”. Dr. Tisdall has been named “America’s Top Dermatologist” by the Consumers Research Council of America since 2011 and has also received the “Patient Choice Award” three years running. When not at work her time is devoted to her husband and two kids.

Karis McCarroll, MD., PA

Dr. Karis Mical Fagan McCarroll received her medical degree in 1983 from the University of Texas, Galveston, Texas. She completed her residency training in Dermatology at the University of Texas Medical School at Houston in 1987. She has been in private practice in San Antonio since 1989, and joined Dermatology San Antonio in 2001. 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. She is a board certified dermatologist and a member of the American Academy of Dermatology, the Texas Dermatological Society, and the San Antonio Dermatological Society.

William C. Cragun, MD

Dr. Cragun received his medical degree in 2005 from the University of Virginia – School of Medicine in Charlottesville, earning induction into the Alpha Omega Alpha Honor Medical Society. He completed his Residency training in Dermatology and served as Chief Resident at the combined Army/Air Force training program located at Brooke Army and Wilford Hall Medical Centers in San Antonio, Texas. Following his residency training, he had the distinct experience of deploying to an austere area of Afghanistan as an infantry doctor with the 101st Airborne Division. He served in the military as an Assistant Professor of Dermatology and is now practicing at Dermatology San Antonio.Dr. Cragun practices medical, surgical and cosmetic dermatology. He loves patients of all ages. He is a board certified dermatologist and a member of The American Academy of Dermatology. When not working, he enjoys spending time with his wife, Molly, and their five kids. In order to better serve the growing needs of our community, Dr. Cragun will be seeing patients at our Westover Hills, Helotes, and Shavano Commons offices.

Mui-Kylia Lee, PA-C

Mui is a certified Physician Assistant with 8 years of experience in clinical and surgical dermatology. She is certified by the National Commission on Certification of Physician Assistant and is licensed by the Texas Medical Board. Mui holds a Master of Science in PA studies from UMDNJ- Rutgers and a Bachelor of Science in microbiology from UCSD. She is a Diplomate of the Society of Dermatology Physician Assistant, the highest honor available as a Dermatology PA. Mui is a fully trained Physician Assistant. She is qualified to perform comprehensive dermatological examinations, diagnose, treat, and prescribe appropriate medical therapy. Mui works closely with our board certified Dermatologists to provide the best care for her patients.In order to better serve the growing needs of our community, PA Lee will be seeing patients at our Westover Hills and Shavano Commons offices.

Erin M. Lenza, PA-C

Erin Lenza is a board-certified Physician Assistant who has been practicing dermatology for over 10 years. Her deep expertise includes diagnosing and treating skin conditions such as psoriasis, rosacea, adult acne, and skin cancers. She also specializes in annual skin exams to screen for skin cancers. Erin graduated from the University of Washington School of Medicine MEDEX Northwest program. Prior to attending PA school, Erin served as a nurse in the U.S Air Force for 10 years.

Erica Cordoba, Licensed Clinical Aesthetician

Erica has worked as a medical assistant in dermatology since 2008. All aspects of dermatology have been of great interest to Erica. She developed a real passion for skincare in particular, so in 2012, she obtained her Aesthetician’s License from Vogue School of Cosmetology. Erica’s experience as a former medical assistant gives her a unique perspective as an aesthetician. She has experience working with medical and aesthetic patients of all ages. She has seen firsthand how effective skincare products and treatments can benefit all patient types. Erica completed advanced training and graduated from CoolSculpting University in September 2016. Her complete list of services offered include IPL, facials, dermaplaning, waxing, CoolSculpting, peels and laser hair removal. Peels and laser hair removal are her favorite treatments to perform because they both offer her patients long term results. Erica is well versed in our medical grade product lines, which include SkinMedica, Skin Ceuticals, Elta MD, Revision Skin Care, and Jane Iredale Mineral Makeup.

Linda Spencer RN, BSN, CRCC

Linda Spencer RN, BSN, CCRC, our Certified Study Coordinator, received her Bachelor of Science degree in nursing through a four year nursing program in Houston, Texas. She spent many years in Critical Care Nursing. She later received her certification in research through the Association of Clinical Research Professionals in 2001. Linda has been a member of Dermatology San Antonio since 2003, which is when she broadened her expertise into dermatology research. As our Certified Study Coordinator, Linda helps us to provide exceptional patient care for those participating in the clinical trials.

the team of dermatologists at Dermatology San Antonio is committed to providing you and your family with caring, superb, comprehensive dermatologic care. Our dedicated, skilled physicians and physician assistants offer a wealth of knowledge and experience to provide thorough treatment for all skin, hair, and nail conditions. We provide the full spectrum of dermatological care, from skin cancer detection and treatment to cosmetic dermatology and even acne treatment.

The team at Dermatology San Antonio offers expertise in medical, surgical and cosmetic dermatology. In addition, we participate in clinical research studies of investigational medications as well as clinical trials of currently approved medications. This allows us to offer the most cutting edge treatments to our patients for a variety of conditions including psoriasis, acne, actinic keratosis, and onychomycosis.

Dermatology San Antonio Mission

When you make an appointment at the Dermatology San Antonio office, know that you will be treated with respect and understanding. Our mission is to provide the highest quality of care for the full spectrum of dermatologic conditions in a compassionate, ethical, and professional manner.

Our San Antonio Dermatologists have memberships in the American Academy of Dermatology, American Society for Dermatologic Surgery, American Contact Dermatitis Society, Texas Dermatological Society, and the San Antonio Dermatological Society.

Our dermatologists have been named in Scene Magazine for S.A. Best Doctors and Texas Monthly Super Doctors and Rising Stars. If you have any skin conditions, are interested in cosmetic dermatology services, or are simply interested in what are services can do for your skin, hair or nails, call us to schedule an appointment 210-615-7171.

Let's get started.

Contact us today for a team designed to make sure you look your best.

Contact Us