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
Brad Fritz, MD, MSCI
Instructor, Critical Care and Clinical & Translational Research
Department of Anesthesiology Featured Member: July 2020
Bradley recently transitioned to a new role as an instructor in the Division of Critical Care and in the Division of Clinical and Translational Research. He cares for patients in the department’s various surgical intensive care units and in the eICU. His research interests include the prevention of postoperative delirium and the application of artificial intelligence to improve patient care before, during, and after surgery.
He was born in Cleveland, Ohio, and completed his undergraduate training in biomedical engineering at Case Western Reserve University in Cleveland. He moved to St. Louis in 2010 to attend medical school at Washington University, and he has been involved with clinical research in the Department of Anesthesiology since 2011. He trained in the department’s Academic Scholars Advancement Program (ASAP) from 2015-2020, which included his anesthesiology residency, critical care medicine fellowship, and a T32 research fellowship.When not in the hospital, Bradley enjoys playing piano, singing, and performing musical theatre with several community groups around the St. Louis area.
Andi Gabaldón
Assistant Residency/Fellowship Program Coordinator
Department of Anesthesiology Featured Member: March 2024
Andi Gabaldón (they/them pronouns) serves as the assistant program coordinator on our education team. Andi assists the residency program by managing data entry projects, assisting with events, and day-to-day operations. Prior to joining the team, Andi served as a case manager for the greater St. Louis metropolitan area. While they are still learning the role, Andi is empowered by the education team to discuss D.E.I. topics and is motivated to advocate for our residents. Andi hopes to foster an inclusive environment as an assistant program coordinator here at Washu.
Outside of work, Andi is a printmaker who enjoys creating new hand carved linoleum relief prints to sell at various artisanal markets throughout St. Louis. Andi enjoys the hands-on process of printmaking and challenging themselves to make their creative visions into reality—getting to know local artists was a bonus they didn’t anticipate but very much love as well!
Kelly Gannon
Compliance Review/Claims Analyst
Department of Anesthesiology Featured Member: May 2025
Kelly joined the Department of Anesthesiology in November 2018 and currently serves as the Compliance Review/Claims Analyst within the billing division. Her career at WashU includes previous roles in the departments of Psychological & Brain Sciences, Orthopedics, and Otolaryngology.
Kelly began her career as a medical coder and was quickly promoted to team lead—a role she held for five years before stepping into her current position. Her responsibilities include auditing billed charges and provider documentation, offering education and training, and running reports to identify and submit missing charges. She especially enjoys supporting her colleagues with complex cases and collaborating with providers to ensure accuracy. Passionate about the ever-evolving nature of medical coding, Kelly thrives on its challenges and continuous learning opportunities.
A lifelong resident of Millstadt, Illinois, Kelly still calls her hometown home, where she lives with two of her three daughters. She previously served as an EMT for the local ambulance service and has a soft spot for animals, sharing her home with three adopted cats: Ash, Cheeseball, and Itty Bitty. In her free time, she enjoys hiking, traveling, trying new foods, working out, and doing puzzles. She’s especially excited about an upcoming trip to Yosemite in April 2025.
Fun fact: Kelly recently became a first-time grandmother! Her daughter MacKenzie and son-in-law Weston welcomed baby Easton in July 2024.
Katie Geist
Grant Specialist II
Department of Anesthesiology FAS Employee of the Quarter: January 2025
Originally from St. Louis, Katie earned her undergraduate degree from Northwest Missouri State University. After, she moved to Nebraska and worked as a ministry partner on campus and in various financial positions. Five years later, she moved back to St. Louis and began working for WashU Medicine in November 2019. Katie, now a Grant Specialist II, joined the Department of Anesthesiology in July 2022. She has a background in the research administrative process with both pre- and post-award experience. Katie and her husband, Ben, have a spunky and beautiful daughter. Katie loves meeting new people, board games, swimming, and video games.