Our specialists

Our caregiver team offers best-practice care that only a major center like ours can provide. Herma Heart Center doctors are consistently ranked among The Best Doctors in America and offer some of the best outcomes in the nation. What’s more, we’re the only pediatric heart care program in Wisconsin where all caregivers are full-time fetal, neonatal and pediatric experts.

Cardiothoracic surgeons


Cardiac intensive care

Cardiac anesthesiologists


  • Sara Creighton, MD
  • Erin Davis, MD
  • Roni Jacobsen, MD
  • Margaret "Peggy" Keane, MD
  • Rohit S. Loomba, MD 
  • Matthew Moehlmann, DO
  • Alex Raskin, MD
  • Shagun Sachdeva, MBBS
  • Nikki Singh, MD
  • Andrew Spearman, MD
  • Karla Wehrheim, MD
  • Jon Willes, MD

Advanced practice nurses

Physician assistants

Cardiology nurse clinicians

  • Stacy Bobber (Supervisor)
  • Stacy Avrit
  • Carol Carson
  • Dawn Dziubek
  • Maura Flynn-Galganski
  • Katie Kogutkiewicz
  • Terri Konkel
  • Lisa Neidhold
  • Lauren Raczaka
  • Liz Reid
  • Emily Reinhardt
  • Joel Robers
  • Tara Saleska
  • Jane Sowinski
  • Katie Vogt
  • Deb Walbergh
  • Paula Welch
  • Holly Wendlandt

Surgery nurse clinicians

  • Yvonne Renick, RN (Lead)
  • Laura Haas, RN
  • Courtney Lazzara, RN
  • Katrina Patten, RN

Research Faculty

Fetal Heart Program

  • Maura Flynn Galganski, RN
  • Paula Welch, RN

Cardiac social workers

  • Patricia Stoll
  • Robin Kostroski


Herma Heart Center psychologist

Cardiac dietician

  • Melissa White


  • Kristine Chase
  • Kevin Daley
  • Caleb Varner

School intervention specialist

  • Kyle Herma

Project Adam

  • Allison Thompson 
  • Tracie Haugen