Our Mission
We are a physician-led advisory group dedicated to the integrity of health plans. Our mission is to provide independent, expert review and evaluation for self-funded employers, ensuring clinical excellence and financial transparency in every decision we make.
Our Leadership
Dr. Justin Voris
Founder & Chief Medical Officer
A fixture in Fort Smith, Arkansas since 2012, Dr. Voris was trained and is board certified in the specialty of Family Medicine, covering lives from birth until the end. Before a medical career, he met his wife while in college at Ouachita Baptist University, graduating in 2004. He earned a subsequent degree in Medical Technology from the University of Arkansas for Medical Sciences in 2006. Following a short working career in laboratory science, they moved to the island of Dominica to attend medical school at Ross University School of Medicine. He trained on the island, then across the country, and upon graduation in 2012, he started Family Medicine residency in Fort Smith at UAMS West (formerly AHEC). He has practiced full spectrum Family Medicine in Fort Smith since graduating from residency in 2015. He is the 25-26' President of the Arkansas Academy of Family Physicians and serves as Chairman on the Fort Smith Airport Commission. In 2026, he was invited to be on the Zion Healthshare national board. He has been actively involved with numerous boards and organizations during his time in town.
Dr. Adam McCall
Founder & Chief Plan Analyst
Dr. Adam McCall is a board-certified family physician and obstetrics provider with a passion for improving healthcare for patients, employers, and health plans. As the founder of Advanced Primary Care of the Ozarks and a leader at OneStone, he is committed to finding practical, innovative solutions that improve quality, reduce unnecessary healthcare spending, and strengthen the relationship between providers, employers, and members.
Known for his ability to connect seemingly unrelated pieces of information, Dr. McCall approaches complex healthcare challenges with both analytical thinking and creativity. Colleagues often describe his mind as a “rolodex,” quickly drawing on clinical experience, regulatory knowledge, and real-world problem solving to identify opportunities others may overlook.
Outside of medicine, Dr. McCall is an avid outdoorsman whose faith, family, and service to others shape both his personal and professional life. Whether caring for patients, advising organizations, or collaborating with health plans, he believes the best solutions come from listening well, building trust, and never losing sight of the people behind the data.
Through OneStone, Dr. McCall’s vision is to help employers and health plans make informed, transparent decisions that lead to better outcomes, healthier communities, and a more sustainable healthcare system.