A Billings native, Mackenzie earned a Bachelor of Science in Nursing from Carroll College in Helena. Shortly after graduation, she moved to Houston, Texas, and spent 6 years as a Pediatric ICU and IMU bedside nurse. While working, she obtained a master’s as a certified pediatric nurse practitioner in acute care at Texas Tech University. Mackenzie spent the next three... Read More about Mackenzie Zier, NP

Nevada native John King, MD loves the miracle and mystery of development, watching children learn and interact with their environment. Developmental Pediatrics recognizes the complexity of human development that is affected by our brain, our body, our family, and our environment. It recognizes that a team of diverse experts including parents - are necessary to improve our development. Dr. King... Read More about John C. King, MD

Douglas C. Barnhart, MD MSPH FACS FAAP daily clinical practice includes all common pediatric surgical problems including: *inguinal hernias *umbilical hernias *undescended testicles *Cholecystectomy (removal of the gallbladder) *hydroceles and feeding access (gastrostomy tube placement). He has a particular interest in minimal access surgery including the treatment of : *congenital lung lesions *inflammatory bowel disease (Crohn’s disease and ulcerative colitis)... Read More about Douglas C. Barnhart