People

Samuel Reuter, PA-C, CAQ-HM, MMS is a Physician Assistant within the Division of Hospital Medicine at Washington University.  He received his Physician Assistant, Master of Medical Science degree from St. Louis University in 2021.  Upon graduating, Samuel completed a fellowship in hospital medicine from the University of Missouri and obtained a Certificate of Added Qualification in Hospital Medicine.  He is passionate about patient care, as well as furthering training and teaching opportunities for physician assistants.

Corey Shy, MD, is an Assistant Professor of Medicine at Washington University School of Medicine, committed to patient-centered care, education, and promoting diversity and inclusion within the medical community. Since joining the Division of Hospital Medicine in 2020, he has provided exceptional care to patients with complex medical needs, emphasizing interdisciplinary collaboration to optimize patient outcomes and reduce readmission rates. Dr. Shy is passionate about mentoring residents and medical students, especially in addiction medicine, aiming to bridge educational gaps and equip future physicians with necessary skills. His community service includes advocating for underrepresented minorities in medicine, reactivating the SNMA chapter at Texas A&M, and enhancing minority representation in residency programs. Dr. Shy’s research focuses on improving patient care through innovative approaches, with significant contributions to colorectal cancer screening and addiction medicine.

Dr. Victoria Soncasie joined the Department of Medicine in Hospital Medicine as an Instructor with a secondary appointment in the Department of Pediatrics in the Division of Hospital Medicine in July 2026. She grew up in St. Louis prior to attending Truman State University in Kirksville, MO, where she graduated summa cum laude with Bachelors of Science in Biology and Spanish. Returning to her hometown, she attended medical school at Saint Louis University School of Medicine. Outside of her studies and clinical work, she dedicated her time to working on the operations of the school of medicine’s student-run free health clinic to provide healthcare to medically underserved people in the St. Louis area. Dr. Soncasie completed her internship and residency in Internal Medicine and Pediatrics at Indiana University School of Medicine. She is dedicated to excellence, clinical reasoning, and delivering high value care to her patients.

Kevin Stephenson, MD, is an Assistant Professor of Medicine in the Division of Hospital Medicine. Dr. Stephenson has two career foci: attending on inpatient general medicine teaching services at Barnes-Jewish Hospital and improving the treatment of undernourished children and pregnant women in sub-Saharan Africa. Alongside Mark Manary, Professor of Pediatrics at WUSM, Dr. Stephenson leads a research group that operates clinical trial networks in Sierra Leone, Malawi, and Ghana, across which novel formulations of therapeutic, supplementary, and school foods are tested in the hopes of treating undernutrition and improving physical and cognitive development in vulnerable populations. He had the good fortune of living in Malawi and Sierra Leone for several years; these experiences form the basis of his research career. Most recently, a trial published by Dr. Stephenson’s group was integral in changing the United Nations Codex Alimentarius regulations for the fatty acid content of ready-to-use therapeutic food, after showing that improved fatty acid balance led to superior cognitive development in children with severe acute malnutrition.

Jaclyn Stutz, FNP-BC, is a Nurse Practitioner within the Division of Hospital Medicine. She received her BSN at Bradley University in Peoria, Illinois. She started her nursing career in acute care medicine at BJH in 2011. She went on to receive her MSN at Maryville University. She joined the Division of Hospital Medicine as an NP in 2019. She serves on the Division’s Leadership Team.

Dr. David Tabagari joined the Division of Hospital Medicine as an Instructor in Medicine in July 2024. He was born and raised in Tbilisi, Republic of Georgia, and moved to the United States in 2021 to complete his Internal Medicine residency training. He attended and received his medical degree in 2017 from Tbilisi State Medical University. After graduating, he worked at “Multiprofile Clinic Consilium Medulla” in Tbilisi, Republic of Georgia, as a junior doctor and later as a resident physician in the hematology-oncology program, where he participated in various projects and was working on several major clinical trials. He is currently a co-founder of “Multiprofile Clinic Consilium Medulla” and is using his training and experience to be actively involved in implementing international standards to provide the highest quality medical care for patients in his home country. Dr. Tabagari completed his internship and residency at the University of Missouri School of Medicine in Columbia prior to joining the division in 2024. His current areas of interest are general internal medicine with a focus on inpatient care, with a special interest in hematology and oncology, as well as the detection and management of immunotherapeutic adverse events requiring hospitalization.

Jia Tang, MD joined the Department of Medicine in the Division of Hospital Medicine as an Instructor in July 2025. She grew up in the beautiful countryside of central China before attending Tongji Medical College, where she graduated with a medical degree and also completed the Internal Medicine residency program. After completing her residency training, Tang spent several years serving factory workers with work-related lung diseases in the rural areas of Shenzhen. While practicing medicine, Tang continued to nurture her passion for further medical education in the U.S. She began her journey with the USMLE and was accepted into the Internal Medicine residency program at St. Luke’s Hospital in Missouri. Along with her ongoing community service, she worked on a quality improvement project promoting the use of GLP-1 agonists and SGLT-2 inhibitors in diabetic patients and cultivated a love of teaching by tutoring medical students. Tang completed her Internal Medicine internship and residency at St. Luke’s Hospital in St. Louis from 2022 to 2025.

Shaili Tapiavala, MD joined the Division of Hospital Medicine in the Department of Internal Medicine as an Instructor in July of 2025. She was born in New York and soon moved to Dallas, Texas. She attended the University of Miami with merit scholarship and graduated with a bachelor’s degree in biology and public health and a minor in chemistry. She subsequently received her medical degree from Texas A&M College of Medicine in 2022. Tapiavala completed her internship and residency at Barnes-Jewish Hospital/WashU School of Medicine in St. Louis prior to joining the division in 2025. In addition to her clinical skills and research work, Tapiavala developed a strong interest in medical education and further enhanced her leadership abilities by completed the Forum for Women in Medicine Leadership Development Program. Her current areas of interest focus on health equity in oncologic care and treatment-related toxicity and its implications for patient morbidity.

Mark Thoelke, MD, is a Professor of Medicine and a Senior Fellow of Hospital Medicine. Mark was the first hospitalist at Barnes-Jewish Hospital in 1998. He helped found the division in 2000 and was Clinical Director, and then Chief until 2020. He now enjoys spending time on the teaching service.