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

Ryan W. Ahern, MD, FAAD


Board-Certified Dermatologist
Fellowship-Trained Mohs Surgeon
Fellow of the American Academy of Dermatology

Ryan W. Ahern, MD, earned his Medical Doctorate and his Masters of Public Health from Tulane University School of Public Health in New Orleans. He was named to the Alpha Omega Alpha Medical Honor Society before completing an internship in general surgery and a year of training in ear, nose and throat surgery at the University of Florida. His dermatology residency was completed at Tulane University and his procedural dermatology fellowship at Cooper University Hospital in New Jersey. While at Cooper, his focus of training was cutaneous oncology, reconstruction and cosmetic procedures.

Specialties and Affiliations

American College of Mohs Surgery
American Academy of Dermatology
American Society for Dermatologic Surgery
Texas Medical Association

Clinic Locations

U.S. Dermatology Partners Medical District
U.S. Dermatology Partners Medical District

1213 Hermann Drive
Suite 650
Houston, Texas 77004

(713) 528-8882

What Our Patients Say

Ryan Ahern, MD
5 Stars  Wonderful staff, clean and comfortable facilities, I could not be happier with my surgery. –
Source : Healthgrades – Sep 21, 2018
Ryan Ahern, MD
5 Stars  Dr. Ahern was friendly and caring, explained the procedure, and completed it quickly and painlessly. Taryn, his nurse, made sure I was comfortable and was so reassuring and thoughtful. The office staff - Paula, Karen, and (I think) Maria, were all helpful and took the time to explain things and answer my questions. Karen, who quickly returned my call when I had a question, was especially kind. –
Source : Healthgrades – Sep 07, 2018
Ryan Ahern, MD
5 Stars  Dr Ahern.. one of my all time favorite doctors. Has done several MOHs surgeries on me, face, ear and scalp. Can’t even tell where he’s done work! He’s pleasant and friendly and his staff considerate and accommodating . –
Source : Healthgrades – Aug 29, 2018

Services Offered By Dr. Ahern