Our San Antonio - Stone Oak location has closed. Dr. Petr will now see all patients at U.S. Dermatology Partners San Antonio.

Alex Jack, MD, FAAD


Board-Certified Dermatologist
Fellow of the American Academy of Dermatology
Alex Jack, MD

Dr. Alexander (Alex) Jack has joined U.S. Dermatology Partners from the Pacific Northwest, after practicing dermatology for four years in a multi-specialty group in the Seattle area. He is board-certified by the American Board of Dermatology.

Dr. Jack earned his undergraduate degree in biology from Cornell University in Ithaca, New York. He traveled west to attend the University Southern California in Los Angeles, where he earned his medical degree and graduated, with highest distinction, in the top five percent of his class. He completed his internship in Seattle at Virginia Mason Medical Center and his dermatology residency in Portland at Oregon Health & Science University, where he served as chief resident.

He discovered the field of dermatology during his first year of medical school after meeting a dermatologist who eventually became his mentor. That enthusiastic physician encouraged Dr. Jack to learn more about the specialty, so he started attending dermatology grand rounds and became fascinated with challenging cases. He then got involved in a dermatology research project and got hooked on the field.

Dr. Jack practices general and medical dermatology and welcomes patients of all ages. He has a particular interest in contact dermatitis and performs comprehensive patch testing to diagnose skin allergies. He is also interested in how adjunctive treatments, such as dietary and lifestyle changes, can improve dermatological conditions. He’s passionate about helping patients improve their quality of life through the treatment of skin conditions.

When he’s not caring for patients, Dr. Jack stays active with travel and outdoor adventures, including cycling, hiking and kayaking. His goal is to visit every U.S. national park (he’s already checked many off the list). Dr. Jack also enjoys live music and watching professional and college sports. He and his wife, Jayme, are proud to call Austin home, along with their two Australian shepherds.

Clinic Locations

U.S. Dermatology Partners Kyle
U.S. Dermatology Partners Kyle

20871 Interstate 35 Frontage Road
Suite 200
Kyle, TX 78640

(512) 280-3939

What Our Patients Say

Alex Jack, MD
5 Stars  He explained what was happening during my procedure which put me at ease. –
Source : Healthgrades – Dec 09, 2018
Alex Jack, MD
5 Stars  Very pleased with his willingness to answer questions and caring attitude. –
Source : Healthgrades – Dec 04, 2018
Alex Jack, MD
5 Stars  Dr. Jack is friendly and professional. I would recommend him to everyone. –
Source : Healthgrades – Nov 16, 2018

Services Offered By Dr. Jack