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 Dr #650
Houston, Texas 77004

(713) 528-8882

What Our Patients Say

Ryan Ahern, MD
5 Stars  Ryan Ahern is a terrific doctor. He is professional, caring, good patient approach, explains what and why he is doing something. Actually listens to patients ( what a concept). Most importantly he is trustworthy. I will and have highly recommended as competent , decent caring, professional Ron Vardy –
Source : Healthgrades – Mar 20, 2018
Ryan Ahern, MD
5 Stars  After a disastrous experience trying to schedule elsewhere, I took control of who was going to do my excision. I landed with Ryan Ahern in Houston. Staff worked very hard to help me get moved from the other doctor and got me scheduled. A++ Medical Assistants were awesome. Thorough and genuinely nice. A+ Dr. efficient and completed the surgery in one pass. He was willing to wait for and use more lidocaine. And he has easy going nature that speaks,to why the staff are great, too. Recommend 100%. –
Source : Healthgrades – Apr 18, 2017
Ryan Ahern, MD
5 Stars  great doc. happy w quick same day service on procedures. –
Source : RateMDs – Oct 26, 2016

Services Offered By Dr. Ahern