Our success is intimately linked to the accomplishments of each and every member of our department.
Each month, four members are nominated and featured to celebrate their commitment to patient care, education, and research.
Current Featured Anesthesiology Department Members

Ream Al-Hasani, PhD
Associate Professor, Anesthesiology

Ashley DuBois, CRNA
Certified Registered Nurse Anesthetist

Ivan Torres
Assistant Supervisor for Insurance Billing

Muthu Vijayasankar, MD
Assistant Professor, Anesthesiology
Featured Anesthesiology Department Members Archive
Jon Bucher, MBA
Business Director for Research Finance
Department of Anesthesiology Featured Member: January 2025
Jon Bucher earned his undergraduate degree in marketing from the University of Missouri and began his career at WashU Medicine in 2010 in the Division of Geriatrics & Nutritional Science. In 2013, he transitioned to the Department of Anesthesiology, where he has since advanced his career. During this time, Jon completed WashU’s PMBA program at Olin Business School, further enhancing his expertise in business management and finance. Currently, Jon serves as the Business Director for Research Finance, overseeing financial operations and supporting research initiatives. Outside of work, he enjoys spending time with his family, tackling home improvement projects, watching horror films, and biking around Creve Coeur Lake.
Sarah Buday, PhD
Associate Professor, Anesthesiology; Pain Psychologist, Pain Management Center
Department of Anesthesiology Featured Member: July 2022
Sarah is an Associate Professor and serves as a Pain Psychologist in the Pain Management Center, where she can be found surrounded by a large number of plants. She also provides assessment and treatment services with the bariatric surgery team. She grew up in St. Louis (Pattonville) and attended Washington University as an undergrad. After working in the WUSM psychiatry department for a bit, she then obtained her PhD in Clinical Psychology at UMSL. Her pre-doctoral internship was completed at the Oklahoma City VA/OU Medical Center, and she did her fellowship at the St. Louis VA Medical Center.
Despite having no natural athletic ability or aptitude, she continues to stubbornly sign up for endurance events such as marathons, ultramarathons, duathlons, and triathlons. Her best girl, Scarlett the Bluetick Coonhound, is a wonderful training partner. Her fiancé, Kevin, cooks her delightful dinners and has reluctantly become a fan of true crime documentaries.
Brendon Burke, MD
Resident Physician, Class of 2023
Department of Anesthesiology Featured Member: October 2021
Brendon was born and raised in Indianapolis and attending Indiana University School of Medicine before coming to St. Louis for residency. He is one of the current CA-2 residents and will be the second anesthesiologist in his family after his dad. His fiancé, Keerthana, is currently a urology resident at the Medical College of Wisconsin in Milwaukee. They plan to dive into the hectic world of wedding planning this coming year. In his free time, Brendon enjoys playing the piano and guitar, making trips up to Milwaukee, watching plenty of Netflix, and traveling whenever he can.
Christina Caldwell
Manager of Operations – Research
Department of Anesthesiology Featured Member: July 2020
Christina has worked at WashU since May 2010, and has been with the department in the Research division since 2013. She currently manages procurement, expenses, onboarding of new employees, visas, and office management. Christina is originally from St. Peters, MO, and found her passion for traveling during high school when she had the opportunity to travel to Quebec/Montreal, Canada, and Egypt. She also participated in two mission trips to Reynosa, Mexico, and spent the summer of 2002 in Sevilla, Spain with the Center for Cross-Culture Study. Christina attended Missouri Baptist University where she studied Business Administration and Spanish. She lives with her son, Dominic, and German Shepherd/Rhodesian Ridgeback mix, Jonah. Aside from traveling, she also enjoys history and any water-related fun.