Residency Program Director

Sydney Nykiel-Bailey

Sydney Nykiel-Bailey, DO

Residency Program Director; Professor, Anesthesiology

2026-27 Chief Residents

Residency Coordinators

Questions?

If you have questions for our residency coordinators, please contact us at anest.residency@anest.wustl.edu.

Residents

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X-zavyer Smith

X-zavyer Smith, MD

Medical School: Vanderbilt University School of Medicine

Portrait of Rebecca Speltz Paiz, MD, PhD

Rebecca Speltz Paiz, MD, PhD

Medical School: University of Minnesota Medical School

Residency: WashU Medicine — Anesthesiology (2022-2027)

Fellowship: WashU Medicine — Regional Anesthesiology and Acute Pain Fellow (2025-26)

ASAP

Portrait of Bianca Szafarowicz, DO

Bianca Szafarowicz, DO

Medical School: Arizona College of Osteopathic Medicine of Midwestern University

Portrait of Roberta Teixera Tallarico, MB

Roberta Teixera Tallarico, MB

Medical School: Escola Superior de Ciencias da Saude

Ellis Tibbs

Ellis Tibbs, MD, PhD

Medical School: University of Maryland School of Medicine

* Scholar

Portrait of Jennifer To, MD

Jennifer To, MD

Medical School: Saint Louis University School of Medicine

Preethi Tumati

Preethi Tumati, MD

Medical School: University of Missouri-Kansas City School of Medicine

Portrait of Sydney Tyler, MD

Sydney Tyler, MD

Medical School: University of Colorado School of Medicine

Portrait of Chiamaka Uche, MD

Chiamaka Uche, MD

Medical School: Ohio State University College of Medicine

Prateek Upadhyay

Prateek Upadhyay, MD, MBBS

Medical School: Government Medical College Chandigarh

Portrait of Miguel Valdez Zerpa, MD

Miguel Valdez Zerpa, MD

Medical School: Universidad de Oriente Escuela de Medicina Nucleo de Bolivar

Portrait of Thomas Van Horn, MD

Thomas Van Horn, MD

Medical School: WashU Medicine