Meet Our ٍٍٍ½خر Pediatric Hospital Medicine Team
Faculty Leadership
Erin Preloger, MD
Interim Division Chief, Associate Professor
Vanessa McFadden, MD, PhD
Associate Division Chief, Associate Professor
Heather Toth, MD
Professor
Faculty
Lolia Abibo, MD
Assistant Professor; Research Pillar Lead, Global Child Health Program
Sarah Bauer, MD
Associate Professor
Brett J. Bordini, MD
Professor
Alina G. Burek, MD
Associate Professor
Sabrina Carro, MD
Assistant Professor
Rosellen Choi, MD
Assistant Professor
Erica Y. Chou, MD
Associate Professor
Leah Cotter, DO
Assistant Professor
Maximilian Cruz, MD
Assistant Professor
Emily Densmore, MD
Assistant Professor
Heather Gladfelter, MD
Assistant Professor
Danita R. Hahn, MD
Assistant Professor
Eli Harman, MD
Assistant Professor
Amanda Kopydlowski, MD
Assistant Professor
Katherine Krause, MD
Assistant Professor
Megan LaCroix, MD
Assistant Professor
Sara M. Lauck, MD
Assistant Professor
Tracey H. Liljestrom, MD
Associate Professor
James J. McCarthy, MD
Associate Professor
Chelsea McElroy, DO
Assistant Professor
Kaitlyn McQuistion, MD
Assistant Professor; Associate Director, Pediatric Hospital Medicine Fellowship Program
Elizabeth Mertens, MD
Assistant Professor; Associate Director, Pediatric Hospital Medicine Fellowship Program
Natalia Painter, MD
Assistant Professor
Brandon L. Palmer, MD
Associate Professor
Amanda J. Rogers, MD
Associate Professor; Associate Director, Pediatric Residency Program; Associate Director, Pediatrics-Neurology Residency Program
Elizabeth Segar, MD
Assistant Professor
Paula Soung, MD
Associate Professor
Sheila Swartz, MD
Associate Professor
Lauren L. Titus, MD
Assistant Professor; Director, Pediatric Hospital Medicine Fellowship Program
Sarah Vepraskas, MD
Associate Professor
Jennifer M. Watson, MD
Associate Professor
Michael Wedoff, MD
Assistant Professor
Michael C. Weisgerber, MD, MS
Professor, Department of Pediatrics, Section of Hospital Medicine; Director, Pediatric Residency Program
Sarah Yale, MD
Associate Professor
Fox Valley Providers
Nicholas L. Anderson, MD
Assistant Professor
Mary Bartel, MD
Assistant Professor
Crystal Bales, APNP
Nurse Practitioner
Andrea Carberry, MD
Assistant Professor
John Edwards, MD
Assistant Professor
Jorge Feria, MD
Assistant Professor
Brianna Gerhartz, DO
Assistant Professor
Jonathon Gutzeit, MD
Assistant Professor
Kevin Hayes, DO
Adjunct Assistant Professor
Peter David Holzwarth, MD
Assistant Professor
Eileen Jekot, MD
Assistant Professor
Lynn Kohlmeier, MD
Assistant Professor
Petra Laeven-Sessions, MD
Assistant Professor
Karen Myhre, MD
Assistant Professor
Claudia Navarez Flores, MD
Assistant Professor
Molly Williams, APNP
Nurse Practitioner
Casandra ZumMallen, MD
Assistant Professor
Current Fellows
Austin Cummings, MD
Pediatric Hospital Medicine Fellow, 2025-2027
ٍٍٍ½خر School: ٍٍٍ½خر; Residency: ٍٍٍ½خر
Ashley Hollo, MD
Pediatric Hospital Medicine Fellow, 2025-2027
ٍٍٍ½خر School: ٍٍٍ½خر; Residency: University of Colorado
Suzette Grindle, DO
Pediatric Hospital Medicine Fellow, 2026-2028
ٍٍٍ½خر School: Ohio University Heritage College of Osteopathic Medicine; Residency: Wright State University
Cassandra Mocek, MD
Pediatric Hospital Medicine Fellow, 2026-2028
ٍٍٍ½خر School: Lewis Katz School of Medicine at Temple University; Residency: University of Chicago
Advanced Practice Providers
Alaina Casper, CPNP-AC/PC
Certified Pediatric Nurse Practitioner
Jennifer Corcoran, PA-C
Physician Assistant
Nicole D. Emlen, CPNP-AC
APP Manager
Jaime L. Fox, CNP, CPNP-AC/PC, CCTC
CSG APP Assistant Director
Morgan Hauer, PA-C
Physician Assistant
Laura Helm, PA-C
Physician Assistant
Sarah Juckem, CPNP-AC
Certified Pediatric Nurse Practitioner
Emily Pachowitz, PA-C
Physician Assistant
Antoinette Patzlsberger, PA-C
Physician Assistant
Lindsey Ray, PA-C
Physician Assistant
Alexis A. Sover, PA-C
Physician Assistant
Isabelle St. John, DNP, APNP, CPNP, AC-PC
Nurse Practitioner
Katherine Waller, DNP, CPNP-PC
Certified Pediatric Nurse Practitioner
Staff
Melissa Barber
Sr. Division Administrator
Judy Borchardt
Administrative Associate
Kelsey Porada, MA
Clinical Research Coordinator III