The Proactive MD Team

“Driven by the pursuit of patient-centric healthcare and accessible solutions, I am committed to revolutionizing our healthcare landscape. Fundamentally, it’s about serving people, transforming lives, and changing healthcare stories for the better. Restoring hope to a hopeless system drives our mission—to ensure every patient receives the best care possible.”

John Collier, Founder & CEO of Proactive MD, is on a mission to systemically improve healthcare by reshaping and revitalizing it with a patient-centered approach. Guided by Proactive MD’s Patient Promise, John spearheads the company’s overarching vision and strategy, continuously seeking new ways to serve patients and employers through strategic planning, executive management, innovative solutions, and key partnerships.

With over 15 years of comprehensive expertise in healthcare management and strategy, John provides a wealth of experience in healthcare administration, payor contracting, provider network development, and designing cost containment plans for employers. John led direct-to-employer contracting for one of the largest hospital systems in the country, giving him an in-depth understanding of the unique landscape of healthcare systems, payors, and employers. Before assuming the role at Proactive MD, John served as the CEO of a South Carolina-based direct primary care provider, further amplifying his industry insights and developing his mission to revolutionize healthcare. A Fellow of the American College of Healthcare Executives and a member of The Young Presidents Organization (YPO), John earned his MBA and MHA from Grand Canyon University. Married to his childhood sweetheart, Marla, John treasures moments together with their three children, Liam, Hudson, and Harper. He loves being with them more than anything in the world. They are very active in their church and love to do family mission trips together. A sports enthusiast, John’s a big fan of St. Louis Cardinals baseball and University of Arizona basketball. His passion for healthcare drives him to continuously study ways to improve and innovate healthcare delivery, recognizing its profound impact on people’s lives.

“My enduring commitment is focused on the collective success of our people and our patients. Embracing a mission-centered, performance-oriented, and team-based approach, I strive to create success by leading and serving others with empathy, integrity, and innovation.”

Rhett Stover assists Proactive MD’s executive team as a collaborator and integrator, helping to bolster an environment where all who serve here feel alive, nourished, and supported to use their talents for the greatest good of our patients and each other.

With almost two decades of experience in healthcare innovation, Rhett leverages his expertise in guiding Proactive MD’s growth strategies and missional alignment throughout the organization. Having taken an interest in Proactive MD since its inception, Rhett has always admired our culture of service and the powerful impact that true care, compassion, and innovation have on each patient.

Prior to joining Proactive MD, Rhett served as Regional President at Healthcare Highways, where he focused on strategic growth and enterprise expansion with a particular emphasis on network innovation, total cost of care, and quality performance. Rhett also worked as CEO of Oklahoma State University (OSU) Medicine and OSU Medical Center (OSUMC), which collectively represent a fully integrated academic health system and one of the largest osteopathic training centers in the nation. Rhett served in regional and national leadership roles focused on managed care strategy and enterprise growth for Mercy Health and Cancer Treatment Centers of America.

A native of Tulsa, Oklahoma, and a Cherokee Nation citizen, Rhett holds a bachelor’s degree in business administration from the University of Oklahoma and a master’s degree in healthcare administration from Oklahoma State University. He is a Fellow of the American College of Healthcare Executives (FACHE) and was recognized by Becker’s Hospital Review by being named to their 2016 class of “Rising Stars: 50 Healthcare Leaders Under 40.” In 2017, Rhett was named to the University of Oklahoma Price College of Business’s “40 Alumni Under 40,” and in 2019, he was named to Oklahoma Magazine’s “40 Under 40.” When he’s not working, Rhett enjoys outdoor activities, running, water sports, and spending time with his family.

“My mission is to champion Proactive MD’s transformative vision throughout the entire healthcare landscape. I am committed to fostering strong relationships and actively listening to the hearts and stories of everyone I meet. I strive to ignite inspiration, empowering others to accomplish remarkable feats.”

Christi Coleman oversees Proactive MD’s client retention strategies and growth initiatives. Driven by her dedication to service excellence, Christi is passionate about transforming the patient experience and forging lasting partnerships with employers and brokers across the country.

With over 30 years of industry experience, Christi leverages her background in strategic consulting and sales to provide vital insights into onsite clinic development and wellness initiatives. She joined Proactive MD in 2018, creating successful onsite clinic solutions, playing a pivotal role in driving success across employer engagement, promoting Patient Advocacy, fostering strategic relationships, prioritizing the patient experience, and overseeing clinical operations. Before joining Proactive MD, Christi spent 23 years working at a large occupational healthcare organization, where she helped develop the wellness and worksite product offerings, create a market sales strategy, and execute and sell service offerings. She graduated with a bachelor’s degree in marketing and sales from Baylor University. Christi has been married to her husband, Kirk, for 30 years. They have three amazing sons and two beautiful daughters-in-law, all graduates of their alma mater, Baylor University. They enjoy traveling together, whether it’s skiing, snowboarding, or spending time in tropical locations.

“I’m emboldened by providing excellent care to today’s patients while identifying and preserving limited resources for generations of patients to come.”

Amanda James collaborates closely with field operations, medical affairs, and client relations. Her primary focus is to ensure Proactive MD’s operations are not only data-driven, but exceptional—surpassing our quality and financial benchmarks. Amanda works to challenge the prevailing cost of care and strives to secure provisions for the benefit of patients now and in the future.

With over a decade of experience in emergency and internal medicine, Amanda began building her population health expertise at BCBS Kansas City. Her operational insight extends to NCQA, FIDE-SNP, MA, and ASO programs, and she brings a strong skill set in alternative risk arrangements, which she leverages to achieve the best outcomes for Proactive MD’s partners. Amanda was drawn to Proactive MD because of our unwavering dedication to fighting for our patients’ greatest good and the exciting opportunity to craft a top-notch, longitudinal primary care solution that’s scalable, emphasizes resource stewardship, and prioritizes patient engagement. Outside of work, Amanda juggles the delightful chaos of the “James Family Circus” alongside her partner, Rob. She cherishes spending time with friends, is an avid football enthusiast (cheering for the Chiefs and Tarleton Texans), and if she has any energy left, indulges in the art of bread baking.

“I believe access to healthcare is a human right, but our current system for delivering that care is confusing, expensive, difficult to access, and—most critically—leaves the patient behind. I know we can do better; I know we can reestablish a system where world-class healthcare is accessible, affordable, sustainable, and patient-centric.”

Jeremy VanderKnyff, Ph.D., leads Proactive MD’s innovation strategy across the Product, Marketing, Technology, and Data Science teams.

With over fifteen years of experience in informatics, clinical operations, and health communication, Dr. VanderKnyff works across Proactive MD’s value lanes to deliver solutions that further our mission to elevate the standard of primary care. After joining Proactive MD in 2018, Dr. VanderKnyff led the design and execution of our informatics strategy, projecting return on investment and population health impact to prospective partners and reporting the clinical and financial performance of our Health Centers. Before joining Proactive MD, Dr. VanderKnyff worked in clinical operations and health informatics at the South Carolina Department of Health & Environmental Control (DHEC), where he served as a Lean Six Sigma consultant and Director of Project Management. He has also served as an expert panelist and consultant for public health data systems and organizational performance management. He earned his Ph.D. in medical anthropology from the University of South Carolina. As a former world traveler (pre-children, of course), he still tries his hand at learning new languages and serves on the board of a nonprofit promoting and preserving South Carolina’s cultural heritage through archaeology education and outreach in public schools. Although he’s admittedly a terrible swimmer, Jeremy loves spending quiet time on the water, kayaking and paddleboarding on nearby lakes with his wife and two boys.

“I’m committed to enhancing individual patient care while actively seeking new, innovative opportunities to elevate healthcare on a broader scale and ensure patients experience care like no other.”

Jason Crumpler, M.D., oversees the development of clear and well-communicated medical strategies for our Health Center operations and creates programs that support patient accessibility and improve patient outcomes.

With almost a decade of experience practicing medicine, Dr. Crumpler leverages his knowledge of public health and management of clinical relationships to grow Proactive MD’s strategic medical solutions and ensure patients continue to receive high-quality, comprehensive care throughout every Health Center. Dr. Crumpler’s tenure spans impactful roles within the healthcare landscape, notably contributing as Regional Medical Director for Bon Secours AFC Urgent Care and assuming integral leadership responsibilities within the Bon Secours Medical Group. He obtained his bachelor’s degree in public health science from Clemson University. Dr. Crumpler completed medical school and his emergency medicine residency at the Medical University of South Carolina. He completed a fellowship at the Academy of Wilderness Medicine and is currently working to obtain his master’s degree in business administration from Clemson University. Dr. Crumpler is married to his wonderful wife, Meg, and they have three very active sons, Whitaker, Jacob, and Cameron. He enjoys being outside, playing golf, and mountain biking in Pisgah National Forest.

“My motivation stems from our Patient Promise, ensuring our internal teams feel empowered by our promise as they deliver it daily. Collaborating to champion a culture that nurtures our staff to leverage their gifts and create impactful change in our patients’ lives is a mission worth embracing.”

Amy Fletcher builds and maintains Proactive MD’s workplace culture, ensuring it attracts, develops, and retains quality staff who are equipped to deliver on our Patient Promise every day.

With an extensive background spanning over two decades in human resources, Amy’s journey in the field includes founding a consulting firm specializing in serving small to midsize organizations across various industries. Her multifaceted experience as an entrepreneur, business owner, and HR executive equips her with a diverse skill set to navigate and lead Human Resources at Proactive MD. Amy’s commitment to Proactive MD stems not just from her professional background but also from her direct experience as a patient benefiting from the transformative Direct Primary Care offered by Proactive MD. Crafting benefit programs for numerous organizations has given her a firsthand view of the profound impact Direct Primary Care can have. As an avid traveler and outdoorsman, Amy enjoys doing anything adventurous. From spending the day in the North Carolina mountains on a motorcycle to traveling in an RV, she loves meeting new people and seeing the beauty of America as she explores. Amy adores spending time with her 6 grandchildren whenever she can.