Tanya Clark Perez, PA-C – a native of El Paso, Texas, joined the clinic in 2017. She attended the University of Texas Health Science Center at San Antonio and obtained a Master’s degree in Physician Assistant Studies. PA Perez completed her undergraduate degree in microbiology at the University of Texas at El Paso and later a post-baccalaureate program in Clinical Laboratory Sciences at UTHSCSA.

She has practiced internal medicine for seven years and has a special interest in preventative care and the role it plays in her patient’s health and wellness. PA Perez focuses on patient education to help patients achieve the quality of life that they desire. She is fluent in English and Spanish.

Dr. Cates – I grew up in Dallas, TX as a closeted gay kid. Being around southern culture and seeing the discrimination LGBTQ people faced kept me in the closet until medical school. After graduating high school, I moved to San Angelo, TX to get my Bachelor’s degree in Biology with minors in business and chemistry. From there, I moved to College Station to get a Master’s Degree in Public Health. Next, I went to Lake Erie College of Osteopathic Medicine at Seton Hill for medical school in Greensburg, PA. I was there first 2 years during the lecture years, then spent 2 years in Elmira, NY for my clinical rotations. During this time, I got to do an away rotation at an HIV clinic in Dallas, where I got my first taste in the field and loved it. After finishing medical school, I did my residency in Internal Medicine in Searcy, AR.

While in Arkansas, I witness the discrimination LGBTQ people face in healthcare first hand, and initially laid low and kept my head down. I had a student tell me, “I hope you find God” after finding out I was engaged to my partner. I had nurses make comments behind my back that would come back to me. I witnessed an attending speak down about a transwoman he was admitting to me. I witnessed a trans patient begging to have a doctor accept her, as she needed her hormones. I had enough of these abuses. There was only so much I could do as a resident, so I did what I could and educated my peers. I did several lectures regarding LGBTQ health issues so others were aware of what we faced.

This ignited a passion and led me to complete a fellowship in LGBTQ Healthcare and HIV at University of California at Los Angeles (UCLA). It was the first of it’s kind, and I was the first to go through. It was an empowering and incredibly rewarding experience. I now feel prepared to take what I learn to provide care for my community in the south, where I feel it is desperately needed. I feel proud and excited to be joining AARC in providing that care.”


Dr. Serrano – an Assistant Professor in the Infectious Disease Division at the University of Texas Health Science Center San Antonio and Medical Director at the Alamo Area Resource Center in San Antonio.

She attended Medical School in the “Universidad de Carabobo” in Valencia, Venezuela. She quickly identified her interest in Infectious Diseases during her rural rotation in a remote community near the Orinoco River in Venezuela after treating many patients with tropical infectious diseases. She completed Internal Medicine Residency and Infectious Diseases Fellowship in the University of Texas in San Antonio.

She provides patient care at the Alamo Area Resource Center. She is an expert on pre and post-exposure prophylaxis for HIV, transgender care, integral treatment for people living with HIV, Hepatitis B and C and other sexually transmitted infections. She is a strong advocate for prevention, linkage to care and early treatment for people living with HIV.

Dr. Serrano provides treatment for patients with complex infections requiring long term antibiotics in the Outpatient Parenteral Antibiotic Clinic (OPAT) in the Robert B Green Clinic from the University Hospital System. She actively participates in research projects evaluating outcomes of patients who have received OPAT therapy.

Dr. Serrano also participates as lead specialist in the TACKLE HIV/HCV ECHO project, a telemedicine project designed to provide care to people living with HIV and HCV, in the attempt to increase access to care to underserved communities.

She also actively participates in teaching Medical Students, Residents, fellows, and other trainees in the UT Health San Antonio School of Medicine.”