Brett Hronek, M.D.
Minh-Thu Le, M.D.
William Micka, M.D. 

Dr. Hronek attended medical school at the University of Iowa, Carver College of Medicine. He completed his internal medicine residency at the University of Iowa Hospital and Clinics in Iowa City, IA.  He then completed his allergy/immunology fellowship at the Washington University School of Medicine in St. Louis, MO.   He is board certified in Internal Medicine and Allergy/Clinical Immunology. After completing fellowship training, Dr. Hronek joined Ferrell Duncan Clinic and his family moved to Springfield.  He is married with two children. Dr. Hronek enjoys being outdoors, hiking, and playing with his two girls and his dog.

Dr. Le began her medical education at the University of Missouri, Columbia, Missouri. She continued her medical training by completing her residency in Pediatrics at the Children’s Mercy Hospital, Kansas City, Missouri.  She spent four years working as a pediatrician in the Air Force before completing her fellowship in Clinical Allergy/Immunology at the University of Kansas Medical Center, Kansas City, Kansas. She has been board certified in pediatrics and is board certified in Allergy/Clinical Immunology. After completing fellowship training, Dr. Le moved back to Springfield, MO, where she is from originally, and joined Ferrell-Duncan Clinic. Dr. Le is married and has two children. She enjoys music, singing, and spending time with her family travelling.   

After completing undergraduate college at Saint Louis University with a degree in Biology, Dr. Micka obtained his MD at St. Louis University School of Medicine in 2003. He then completed 3 years of residency training in Internal Medicine at Barnes Hospital / Washington University School of Medicine. He worked as a hospitalist for one year at Barnes Hospital before beginning a two year fellowship in Allergy and Immunology at theWashington University School of Medicine in 2007. He completed his fellowship training in June of 2009. He is board certified in Internal Medicine and Allergy/Clinical Immunology. After completing fellowship training, Dr. Micka joined Ferrell-Duncan Clinic and moved with his family from Saint Louis to Nixa, Missouri. He is married and has two children. In his free time he enjoys playing with his kids, hiking, fishing, camping and sailing. He also enjoys photography.

 

 

Seth Knight, MD

Dr. Knight completed medical school at the University of Mississippi in 2019 and residency training in Internal Medicine at the University of Kentucky. He pursued fellowship in Allergy and Clinical Immunology at Tulane University in New Orleans, LA. He is board-certified in allergy and clinical immunology. He enjoys helping improve his patient's lives by using cutting-edge research and evidence-based guidelines, but with a down to earth approach knwoing that every patient is unique. He has an excellent bed-side manner and dedicated to providing comprehensive and compassionate care. Outside his work as an allergist, Dr. Knight enjoys traveling, spending time with his family and dog, playing golf, and watching SEC football (Go Bulldogs)! 


James Rives, Physician Assistant

Mr. Rives received his P.A.degree at Missouri State University in Springfield, MO.  He worked in our clinic as a licensed practical nurse for five years before going back to school and becoming a physician assistant in 2022.  He has both the practical experience and academic knowledge in allergy that is unique for a physician extender. We are thrilled he came back to us adding to an already vibrant practice. He is also co-supervises our food oral immunotherapy program. He is an avid reader, enjoys traveling, and is committed to life-long learning.