People

Hayley is a nurse practitioner in the infectious diseases division. She sees patients at Barnes-Jewish West County Hospital – Medical Office Building 2, 10 Barnes West Drive, Creve Coeur, MO 63141 Suite: 200
Fax: 855-202-2372

Dr. Pal specializes in HIV basic science and translational research. She additionally runs an HIV cure trial out of the Infectious Disease clinical research unit (ID-CRU) and serves on the inpatient infectious disease consult service.

Dr. Pande specializes in the care of transplant recipients, with a special focus on opportunistic infections and antimicrobial prophylaxis in bone marrow transplant recipients.

Dr. Parra-Rodriguez specializes in the longitudinal clinical care of people with HIV, with a special clinical research focus on aging, age-related clinical conditions, and mental health in people with HIV.

Dr. Philips is principal investigator of an NIH-funded lab that studies how Mycobacterium tuberculosis evades the host immune response.

Dr. Pinzone’s interests are HIV, TB and viral infections in immunocompromised hosts.

Dr. Poowanawittayakom interests are in bone and joint infection, infection prevention/control, hepatitis C, emerging infectious diseases, and global health.

Dr. Powderly has been actively involved in HIV-related clinical research for over thirty years with specific interests in opportunistic infections, metabolic complications and long-term outcomes of antiretroviral therapy.

Dr. Presti specializes in clinical and translational research in infectious disease, with a special focus on HIV, SARS-CoV-2 and other viral infections.

Jeanette sees patients at the
Infectious Diseases Clinic
620 South Taylor Ave., Suite 100
St. Louis, MO 63110
Appointments: 314-362-9098
Fax: 314-362-9851

Dr. Ramakrishnan’s research focuses on applying implementation science strategies to improve domestic HIV prevention and care, particularly for cisgender women.

Dr. Ratzlaff grew up in Hillsboro, KS. He completed his BS in Medical Molecular Biology at Oral Roberts University in 2018 and Doctor of Osteopathic Medicine at Arkansas College of Osteopathic Medicine in 2022. He completed his Internal Medicine Residency at UAMS Northwest in 2025, where he was Chief Resident from 2024-2025. His areas of clinical interest include emerging pathogens, antimicrobial-resistant organisms, and infections in immunocompromised hosts, including invasive fungal infections. Outside of medicine, Dr. Ratzalff enjoys staying active, including long walks in Forest Park with his bernedoodle, Chip. He also likes trying new restaurants with his wife, finding the St. Louis food scene a very pleasant surprise.

Why did you choose WashU for your ID fellowship?
“I chose WashU for fellowship training because of its high clinical volume and complex patient population, which draws referrals from multiple surrounding states. I was also drawn to the strength of the program and department leadership, as well as the opportunity to learn from faculty who are leaders in their fields.”

Dr. Rauseo specializes in clinical infectious diseases, with a special focus on mycology and infectious that affect immunocompromised hosts. Since the outset of the COVID-19 pandemic she has served as an investigator in the Infectious Disease Clinical Research Unit (ID-CRU) in multiple clinical trials and translational research in the fight against COVID-19.

Dr. Reddy grew up across several states in south India and calls the entire region his home. He completed his medical education at the Kasturba Medical College Mangalore of Manipal University, earning an MBBS in 2014. He then earned his MPH at the University of Edinburgh in 2020 before going on to complete his residency at Garden City Hospital through Michigan State University in 2025. His areas of interest include STIs, parasitology, HIV/AIDS and anti-microbial stewardship. On his day off, you can find him going for a run in Forest Park or hiking the Mural Mile.

Why did you choose WashU for your ID fellowship?
“WashU has one of the most robust Infectious Disease divisions in the country with global leaders across several domains of the specialty. The diversity and complexity of the patient profile encountered here, coupled with a rigorous and perfectly designed program, hones your skills and molds one to practice ID anywhere in the world.”

Dr. Reno specializes in sexual health care, with a special focus on the clinical care of sexually transmitted infections (STI) and the intersection with HIV prevention.

Dr. Rosa’s experience in the statistical analysis of complex datasets (utilizing multiple types of evidence spanning treatments or species) has led to the identification differentially expressed genes, drug targets and pathways of interest for experimental verification.