People
Tim Welch, MD
Dr. Timothy Welch is the Co-Director of the Center for Preoperative Assessment and Planning (CPAP) for the Pediatric Division and directs the Liver Transplant Service for the Pediatric Division. He is a graduate of University of Cincinnati College of Medicine. He completed an internship and residency in pediatrics at St. Louis Children’s Hospital and residency in anesthesiology at Barnes Jewish Hospital/Washington University in St. Louis School of Medicine. He completed fellowships in pediatric critical care medicine and pediatric anesthesiology at Washington University in St. Louis School of Medicine. He joined the Department of Anesthesiology as Assistant Professor in July 2013.
Brian Wessman, MD
Program Director, Anesthesiology Critical Care Medicine Fellowship; Professor, Anesthesiology & Emergency Medicine
- Email: brianwessman@wustl.edu
Jeffrey Wherritt, DO
Pediatric Anesthesiology Fellow (2026)
Medical School: Kansas City University of Medicine and Biosciences College of Osteopathic Medicine
Residency: WashU Medicine — Anesthesiology
Jeffrey Wherritt, DO
Pediatric Anesthesiology Fellow
Department of Anesthesiology Featured Member: November 2025
Jeffrey Wherritt is a current pediatric anesthesiology fellow at WashU Medicine. Originally from Wichita, Kansas, he played collegiate tennis at the Division II level before earning his medical degree from Kansas City University College of Osteopathic Medicine (KCU-COM). He then completed his anesthesia residency at WashU Medicine and stayed for fellowship.
Outside of work, he enjoys exploring St. Louis’s vibrant restaurant scene, spending time with his family, and cheering on the Kansas City Chiefs. His favorite hobbies include golf, tennis, and pickleball. He is passionate about patient care and looks forward to carrying that same dedication into his future career.
Brandon White, MD
Medical College of Georgia School of Medicine
Dyan White
Clinical Research Supervisor
Department of Anesthesiology Featured Member: November 2024
Dyan was born in Oxfordshire, England, to a U.S. military family and spent much of her life moving between the U.S. and the U.K. before settling in Birmingham, Alabama, to pursue her education. She earned a Bachelor of Science in Psychology from the University of Alabama at Birmingham, with additional studies in communicable diseases.
Dyan dedicated over a decade to researching chronic pain and discrimination among individuals with and without HIV. As the supervisor of Dr. Burel Goodin’s Lab, she specializes in quantitative sensory testing (QST) and protocol development, training and supporting fellow researchers in these areas.
Outside of work, Dyan is a proud plant and dog mom with a passion for helping others and continuously learning about physical and mental health and wellness. Now a resident of St. Louis, she is excited to explore her new community and connect with the people around her.
Andrew Wilkey, MD
Medical School: The University of Texas Health Science Center at San Antonio Joe R. and Teresa Lozano Long SOM
Andrew Wilkey, MD
Resident Physician
Department of Anesthesiology Featured Member: February 2026
Andrew Wilkey is a CA-1 in the Department of Anesthesiology at WashU Medicine. Originally from Idaho, Andrew completed his undergraduate degree in molecular biology and spanish at Brigham Young University. He then attended the University of Texas Health Science Center in San Antonio for medical school.
Andrew and his wife have a one-year-old little boy who is keeping them on their toes and up all night. In his free time, Andrew loves going to professional sporting events and doing almost anything outdoors. A fun fact about Andrew is that when he was looking at residencies, he had a specific Excel tab for residencies with awesome zoos nearby. Let’s just say WashU was VERY high on the list.