Faculty
Saint Louis University's infectious diseases faculty physicians are recognized national and international experts in treating various diseases and immune deficiency disorders. They are actively involved in developing and updating national and international patient care guidelines for improved diagnosis and treatment of diseases.
Our board-certified American Board Of Internal Medicine (ABIM) faculty are very experienced and treat a wide range of patients with a variety of cases.
Getahun Abate, M.D., Ph.D.
Associate professor, Infectious diseases
Getahun Abate, M.D., Ph.D., is an infectious diseases specialist who practices general infectious diseases. His research interest is mycobacterial diseases and emerging infectious diseases.
Abayomi Agbebi, M.D.
Assistant professor, Infectious diseases
Abayomi Agbebi, M.D., is is our clinical section chief, medical director of our SLU ID outpatient clinic and fellowship program director. He has extensive knowledge and experience and brings excellent patient care to the forefront.
Pimpawan Boapimp, M.D.
Assistant professor, Infectious diseases
Pimpawan Boapimp, M.D., is the antimicrobial stewardship director and an assistant professor who provides both inpatient and outpatient infectious disease services. She received her infectious disease fellowship training from the Wake Forest School of Medicine. Her interests include HIV, hepatitis C, bone and joint infections, and the antimicrobial stewardship program.
Carlos Portales Castillo, M.D.
Assistant professor, Infectious diseases
Deputy transplant director
Carlos Portales Castillo, M.D., is an assistant professor and infectious diseases attending physician. He completed his infectious diseases and transplant infectious diseases training at the Harvard combined Massachusetts General Hospital/Brigham and Women's Hospital program and joined SSM-SLU in July 2025. His clinical and research interests include infections in immunocompromised hosts, antimicrobial stewardship/infection control in transplant, CMV and head and neck infections.
Geoffrey Gorse, M.D., Ph.D.
Adjunct professor, Emeritus professor, Medicine
Geoffrey Gorse, M.D., Ph.D., has been a faculty member in the ID division at SLU since 1989. He serves as an attending physician in inpatient and outpatient clinical care activities and didactic and patient-based teaching. He is interested in evaluating, treating and preventing respiratory virus infections and has been an investigator on many viral vaccine clinical studies.
Daniel Hoft, M.D., Ph.D.
Division director, Infectious diseases, Allergy and immunology
Daniel Hoft, M.D., Ph.D., is a professor of internal medicine at Saint Louis University School of Medicine. His specialty area is infectious diseases, with a particular interest in tuberculosis. This aligns with his research interest in vaccine development employing precision medicine methods. Hoft received his medical education from the University of Missouri. He completed his internal medicine, infectious disease and Ph.D. training in microbiology/immunology from the University of Iowa Hospital and Clinics. In 2018, he was named a fellow of the Academy of Science of St Louis for excellence in public communication, mentoring, and leadership in the field of infectious diseases and vaccine research.
Rong Hou, M.D., Ph.D.
Associate professor, Infectious diseases
Rong Hou, M.D., Ph.D., is an attending physician in inpatient clinical care activities, didactic and patient-based teaching.
Brett Jagger, M.D., Ph.D.
Assistant professor, Infectious diseases
Brett Jagger, M.D., joined SSM-SLU in January of 2023 and attends on the inpatient infectious diseases consult service. During his Ph.D. and fellowship training, he researched influenza A virus molecular pathogenesis and the preclinical development of arbovirus vaccines. He is a co-investigator with SLU's NIH Vaccine and Treatment Evaluation Unit (VTEU). He is interested in developing vaccines for emerging arboviruses and better vaccination strategies for seasonal respiratory viruses.
Kevin Robertson, M.D.
Assistant professor, Infectious diseases
Kevin Robertson, M.D., is a former fellow of the SLU infectious diseases fellowship who after graduating in June 2024 became faculty in July of 2024. He is an infectious disease specialist who provides both inpatient and outpatient services. His interests include HIV and antimicrobial stewardship.
Matthew Stack, M.D.
Assistant professor, Infectious diseases
Medical director, transplant infectious disease
Matthew Stack, M.D., joined the infectious disease department at SSM-SLU in the summer of 2024. He is the transplant/immunocompromised infectious disease director. He did his internal medicine residency and general ID fellowship at Indiana University. He then went on to do an extra year of fellowship for transplant ID at the University of Texas Health Science Center at Houston/MD Anderson Cancer Center. His focus is on the care of patients with kidney transplants, liver transplants, bone marrow transplants, in addition to patients with leukemia, lymphoma, and other types of cancer undergoing chemotherapy. He also sees patients who are immunocompromised secondary to other causes, such as patients with rheumatological diseases on immune/biological therapy. His interests include fungal infections, CMV, using next-generation DNA sequencing to improve diagnosis of infectious diseases, and solid organtransplantation in patients living with HIV.
Ashley Hynes
Physician assistant
Ashley Hynes joined SSM-SLU in April of 2023. She works with the inpatient consult service, primarily treating general ID patients who will be followed as outpatients through the SLU ID Outpatient Clinic. She received her master's in physician assistant studies at Concordia University in Mequon, Wisconsin.
Margaret 'Maggie' Neff
Physician assistant
Maggie joined SSM-SLU in May of 2024. She works with the inpatient consult service, primarily treating general ID patients who will be followed as outpatients through the SLU ID Outpatient Clinic. She received her master’s in physician assistant studies at Saint Louis University.