Physician Assistant


Steven A. Davis, MD


Gloria Johnson, MPAS, PA-C

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Steven A Davis MDSteven A. Davis, M.D, Medical Director     A San Antonio native, Dr. Davis received a B.A. from Yale in 1969. He received his M.D. from the UT Southwestern Medical School in 1973 and completed a dermatology residency at the University of California San Francisco (UCSF) Medical School. He was certified by the American Board of Dermatology in 1977 and served on the academic faculty at UCSF until 1983, when he returned to San Antonio to go into private practice. 


Dr. Davis is currently an Adjunct Professor in Dermatology and Cutaneous Surgery at the University of Texas Health and Science Center at San Antonio. He is a fellow of the American Academy of Dermatology, the American Society for Laser Medicine and Surgery, the American Society for Dermatologic surgery and a former president of the San Antonio Dermatologic Society.  His syndicated daily radio feature, “Speaking of Health,” aired on the CBS Radio network for 34 years.

Dr. Davis is founder and director of the Dermatology and Laser Center of San Antonio™, which specializes in general and cosmetic dermatology and laser skin surgery.  His research facility, the Dermatology Clinical Research Center of San Antonio ( has been involved in more than 150 clinical trials for more than 60 companies including Abbott, Allergan, Amgen, Bristol-Myers Squibb, Genentech, GlaxoSmithKline, Leo Pharma, Lilly, Novartis, Pfizer and TEVA Pharmaceuticals.

Dr. Davis has been performing cutaneous laser surgery since 1992 and has taught laser surgery courses for both HGM, Inc., manufacturer of the HGM Krypton Vascular and Pigmented Lesion Laser and Renaissance erbium:yag lasers; Luxar Corporation, maker of the NovaPulse CO2 Laser for facial skin resurfacing; and ESC Medical Systems, maker of the PhotoDerm VL/PL/HR intense pulsed light system.



  Physician Assistant



Gloria J. Johnson, MPAS, PA-C, served in the US Air Force for 20 years and received a Bachelor of Science, Physician Associate, from the University of Oklahoma in 1985.  She is nationally board certified as a Physician Assistant. She completed an Otolaryngology/Head and Neck Surgery PA Residency in 1993 and received a Master's in Physician Assistant Studies from the University of Nebraska in 2000 with a focus in dermatology. 

She has a very diverse clinical background which includes experience in family practice, primary care/urgent care, otolaryngology, neurotology, and dermatology.   Gloria is a current member of the Society of Dermatology Physician Assistants and has served as chairman of the Continuing Medical Education Committee in the past.