Meet Our 91ɫƵ 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
Associate 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
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
Elizabeth Mertens, MD
Assistant Professor
Natalia Painter, MD
Assistant Professor
Brandon L. Palmer, MD
Associate Professor; Assistant Director, Pediatric Hospital Medicine Fellowship Program
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
Professor
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
Jonathan 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
Heather Gladfelter, MD
Pediatric Hospital Medicine Fellow, 2024-2026
Medical School: Saint Louis University School of Medicine; Residency: Corewell Health/Michigan State University/Helen DeVos Children's Hospital
Elizabeth (Liz) Smits, DO
Pediatric Hospital Medicine Fellow, 2024-2026
Medical School: Chicago College of Osteopathic Medicine of Midwestern University United States of America; Residency: University of Iowa Hospitals and Clinics
Austin Cummings, MD
Pediatric Hospital Medicine Fellow, 2025-2027
Medical School: 91ɫƵ; Residency: 91ɫƵ
Ashley Hollo, MD
Pediatric Hospital Medicine Fellow, 2025-2027
Medical School: 91ɫƵ; Residency: University of Colorado
Advanced Practice Providers
Jaime L. Fox, CNP, CPNP-AC/PC, CCTC
CSG APP Assistant Director
Julia Blumenshine, PA-C
Physician Assistant
Alaina Casper, CPNP-AC/PC
Certified Pediatric Nurse Practitioner
Jennifer Corcoran, PA-C
Physician Assistant
Nicole D. Emlen, CPNP-AC
APP Manager
Morgan Hauer, PA-C
Physician Assistant
Laura Helm, PA-C
Physician Assistant
Sarah Juckem, PA-C
Physician Assistant
Antoinette Patzlsberger, PA-C
Physician Assistant
Emily Poenitsch, 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
Nurse Practitioner
Staff
Melissa Barber
Sr. Division Administrator
Judy Borchardt
Administrative Associate
Kelsey Porada, MA
Clinical Research Coordinator III