Our Team

Ruth Serrano Pinilla, MD


Dr. Serrano is an Assistant Professor in the Infectious Disease Division at the University of Texas Health at San Antonio. She attended Medical School at the “Universidad de Carabobo” in Valencia, Venezuela. She completed Internal Medicine Residency and Infectious Diseases Fellowship in the University of Texas in San Antonio. 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 is a provider and Medical Director at the Alamo Area Resource Center (AARC), a community clinic focused in providing comprehensive care to the LGTBQ community and people living with HIV in San Antonio. She is an expert on pre and post-exposure prophylaxis for HIV, transgender care, management of sexually transmitted infection, antiretroviral and treatment Hepatitis B and C. She actively participates in teaching Medical Students, Residents, fellows, and other trainees in the UT Health San Antonio School of Medicine.

Raudel Bobadilla, MPH, CHW-I

Program Manager

Raudel Bobadilla serves as the Program Manager for the UT Health San Antonio South Central AIDS Education and Training Center (AETC). As Community Health Worker Instructor (CHW-I), he has built a strong skill set for engaging and partnering with communities, care providers, and clinics to improve the population’s health. In multiple projects, he has collaborated with community members, leaders, and organizations to connect the public to services and research opportunities. Mr. Bobadilla brings considerable experience as a Practice Facilitator and Case Manager for an HCV screening and linkage to treatment project. He helped create innovative treatment pathways within 18 clinics across 14 counties in South Texas. Through close collaboration with each clinic, Mr. Bobadilla, trains staff in program protocols, adapts the care model to the context of each site and serves as lead contact between clinic partners and the research team.

Maria Gutierrez

Program Coordinator

Maria Gutierrez is the Program Coordinator for the UT Health San Antonio South Central AETC. After completing her BS in Community Health from The University of Texas at San Antonio, Ms. Gutierrez has dedicated the past 5 years working with marginalized populations in the nonprofit sector. Her experience includes comprehensive and culturally competent education to empower communities to prevent the spread of HIV and STI’s. Most recently, she had been navigating patients living with HIV/HCV through the continuum of care for the TACKLE HIV/HCV Project.  Her skill set includes the prevention and management of infectious disease, distribution of project specific HIV/HCV education and providing access to quality care for underserved communities.

Maria Chacko, BS, DDS

HIV ECHO Coordinator

Maria Chacko is a research assistant in the Department of Infectious Diseases. Maria graduated from Calvin College with a Bachelor of Science. She then earned her Dental Surgery degree (BDS) from Ambedkar Dental college and hospital in Bangalore, India. While practicing as a dentist in India, Maria was involved in community health programs that inspired her to improve health care provisions for people living in rural areas.

Barbara Taylor, MD, MS

Lead HIV ECHO Hub Specialist

Dr. Barbara Taylor is an Associate Professor of Infectious Diseases and the Assistant Dean for the MD/MPH Program at UT Health San Antonio with a co-appointment at the UTHealth School of Public Health. Dr. Taylor conducts impactful research to improve health outcomes for underserved populations living with or at risk for HIV. She provides treatment for patients living with infectious diseases in San Antonio. A strong community advocate, she is a co-chair of the End Stigma End HIV Alliance of San Antonio and the Clinician Key Opinion Leader for San Antonio’s Fast Track Cities Initiative. She also works with two programs to increase screening and treatment for Hepatitis C in South Texas: TACKLE and HEPVista. Dr. Taylor is an alumna of Princeton University, Harvard Medical School, and the Columbia University Mailman School of Public Health and is board certified in internal medicine and infectious diseases.

Delia Bullock, MD

Educator and Training Specialist

Dr. Bullock is a graduate of St. Mary’s University and received her M.D. from the University of Texas Health Science Center in San Antonio, where she also completed her post-graduate training in Internal Medicine and served one year as Chief Medicine Resident. In 1996 she joined the faculty at UT Health Science Center, in the Division of Infectious Diseases and became a clinician at the University Health System Family Focus AIDS Treatment Services Clinic (FFACTS). She was appointed Medical Director in 1999. She lectures regularly in both academic and community settings about various topics including HIV/AIDS, sexually transmitted diseases, and primary care topics relevant to marginalized populations. She served as the Medical Course Director of an interprofessional elective (Interprofessional Care in HIV) and the community mentor for all community service-learning initiatives 2009-2013. She also serves the HIV/AIDS community in South Texas through improving the quality of health promotion/health education outreach. Finally, she serves as the Educator and Training Specialist for the UT Health San Antonio SCAETC.

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