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

Tricia A. Ridley, PA‑C

Physician Assistant-Certified
OSHA Safety Officer | Advanced Cardiac Life Support Certified

Tricia Ridley has worked in the medical profession since May 1998. She joined U.S. Dermatology Partners as a physician assistant in February 2008. In addition to her care for patients, Tricia also supports the U.S. Dermatology Partners practice by maintaining its quality criteria for the Accreditation Association of Ambulatory Healthcare, which requires recertification every three years.

Tricia is also an Occupational Safety and Health Administration safety officer and is certified in Advanced Cardiac Life Support. She is a member of several professional organizations, including the American Academy of Physician Assistants and the National Commission on Certification of Physician Assistants.

After attending San Jacinto Community College for several years, Tricia graduated with honors from the University of Houston in 2002 with a Bachelor of Science degree in Psychology and a minor in Biology. In 2006, she earned a Master of Physician Assistant Studies degree from the University of Texas Medical Branch in Galveston, Texas.

Prior to joining U.S. Dermatology Partners, Tricia worked as a physician assistant in Occupational Medicine at NOVA Healthcare. She also worked as a physician assistant at the Michael E. DeBakey Veteran’s Administration Medical Center in Houston where she cared for dermatology patients.

When Tricia is not working, she enjoys exercising, traveling and spending time with her three young children. She and her family contribute regularly to Feed the Children, a global organization focused on ending childhood hunger.

Specialties and Affiliations

American Academy of Physician Assistants
National Commission on Certification of Physician Assistants
Phi Mu Fraternity


  • Recipient of the UTMB Kempner Scholarship, 2004
  • Recipient of the UTMB Gnitzinger Scholarship recipient, 2004
  • UTMB Dean’s Honor List, 2004 through 2006
  • Member of the Golden Key International Honor Society member, 2001-2002
  • University of Houston Dean’s Honor List, 2000-2002
  • San Jacinto Community College Dean’s Honor List, 1998-2000

Clinic Locations

U.S. Dermatology Partners Pasadena
U.S. Dermatology Partners Pasadena

5125 Preston Road
Suite 150
Pasadena, TX 77505

(281) 991-0737

“At Skin and Laser Surgery Associates, we empower our patients by equipping them with knowledge about their specific condition. Working closely with Dr. Joseph, our entire medical team guides them through all aspects of their treatment process.”

– Tricia A. Ridley, PA-C

Services Offered By Tricia Ridley