Katherine Milhouse, PNP

Colleen Walsh, MSN, RN, CPNP, is a board-certified pediatric nurse practitioner who works with the cardiology and cardiothoracic teams at SSM Health Cardinal Glennon Children’s Hospital. She received both her Bachelor of Science in Nursing and her Master of Science in Nursing from Saint Louis University. She treats patients from newborn to 18 years old and has a special clinical interest in pediatric arrhythmias, inheritable arrhythmias, electrophysiology studies and ablations, pacemakers, ICDs and device management.

Laura Slamp, MSN, RN, CPNP-PC, AE-C, is a board-certified pediatric nurse practitioner for the pulmonology team at SSM Health Cardinal Glennon Children's Hospital. She received her both her Bachelor of Science in nursing and her Master of Science in nursing from the University of Missouri - St. Louis. Laura sees patients from birth to 21 years old and practices at the main hospital campus and the specialty clinics in north county, south county and in Lake St. Louis. She specializes in asthma and high-risk asthma. Laura enjoys treating children with a multitude of pulmonary diseases and enjoys building relationships with her patients and helping improve their quality of life.

H. Thomas Johnson, MD, is board-certified in sleep medicine and family medicine. He works as a pediatric and adult sleep specialist. He has been in practice in the St. Louis area since 2007. He graduated from the University of Missouri-Columbia with his medical degree and completed his residency at St. Vincent’s HealthCare in Jacksonville, Fla. After completing his residency, Dr. Johnson practiced family medicine for five years. He then went on to complete a fellowship in sleep medicine at Saint Louis University before joining SSM Health. Dr. Johnson has also served as the President of the Missouri Sleep Society and is involved in the American Academy of Sleep Medicine.