John Collier, MD cares for children and adolescents with a wide variety of gastrointestinal disorders. He values clear, open communication, family and patient empowerment, and shared decision-making. His professional interests include esophageal diseases, functional disorders (disorders of gut-brain interaction), inflammatory bowel disease, and interprofessional communication.

Dr. Collier grew up in Des Moines, Iowa and earned an undergraduate degree at Saint John’s University in Collegeville, Minnesota, where he ran cross country and track and sang in the chamber choir. In his free time, he enjoys backcountry skiing, cooking, and cycling.  He races for Team George’s Cycles and volunteers with Big Brothers Big Sisters.

Stephanie Gorringe, FNP has a special interest in preventive medicine and education, women's health, and pediatrics.

Stephanie earned her bachelor's degree in psychology from Brigham Young University–Idaho, her bachelor's degree in nursing from Nevada State College, and her family nurse practitioner's degree from Graceland University.

Vaughn Harris, MD enjoys caring for patients of all ages and treating a broad scope of conditions. He completed both his internship and residency in family medicine at the University of Texas Health Science Center in Tyler.

Kimberly Hartrick Buechle, CPNP, MPH is board certified in pediatric primary care. She enjoys partnering with patients and their families to help guide them in reaching their health and wellness goals.

Kim also works with the St. Luke's CARES program, evaluating and caring for at-risk children who are victims of maltreatment and abuse. She has led several nursing committees focused on quality improvement and evidence-based practice.

Kim earned a bachelor's degree in nursing from University of Regis, a master's degree in public health from the University of Alabama-Birmingham, and a master's degree in nurse practitioner studies from the University of Colorado. While working as a registered nurse in the NICU, she also earned a certificate in NICU nursing.

In her free time, Kim loves hiking, running, and spending time with her husband and their dog.

Dr. Melvin graduated from Idaho State University with a bachelor's degree in biology. He earned his doctoral degree in osteopathic medicine from Midwestern University's Arizona College of Osteopathic Medicine and attended the Family Medicine Residency of Idaho through the University of Washington.

In his free time, Dr. Melvin enjoys fishing, skiing, upland bird hunting, and spending quality time with his family. He is also involved with his local school board.

Jeffrey Mulert, MD is a general pediatrician who cares for patients in the hospital, newborn nursery, and outpatient clinic. His main goal is to provide quality, compassionate pediatric care for newborns, infants, toddlers, children, and teens in the Magic Valley and surrounding communities.

Trevor Satterfield, MD is passionate about providing high quality medical care to children and adults of all ages. In addition to focusing on the core primary care needs of his patients, he also works with physicians and others within St. Luke’s to improve the quality, cost and efficiency of health care.

Originally from Idaho, Dr. Satterfield earned his bachelor's degree from Idaho State University, graduating with honors. He completed his medical degree at the University of Utah and his family medicine residency training at McKay-Dee Hospital in Utah. Today, he supports the next generation of providers by instructing medical students and residents.  

In his free time, Dr. Satterfield enjoys spending time with his family, boating, gardening, practicing his faith, and participating in community service and events.