About us
Our Mission
To save lives by helping people learn and retain knowledge more effectively.
The Passion Behind The Mission
From Our CEO:
The EMS world became intensely real for me in 1998. My grandmother, in her late 70s, was involved in a horrific car accident after an improperly placed sign obstructed her view at a stop. A truck, traveling at high speed, collided with her small vehicle.
The accident required a life-flight to Vanderbilt Hospital. At the scene, an unexpected connection emerged: the first responder was my best friend from high school. He and his team had to use the Jaws of Life to extract my grandmother. It was in that moment, while working to save a life, that he recognized the person was someone from his own community, his friend’s grandmother.
I saw the devastating effect of this work on him when he arrived at the hospital. The look on his face showed the immense emotional and mental strain that EMS professionals endure. They rush into life-or-death situations, never knowing whose loved one—whose grandmother, mother, or brother—they will be helping next.
While my grandmother ultimately succumbed to her injuries, it was the heroic and immediate care of that team that gave her a chance. Their professionalism and speed made it possible for her to survive long enough to reach the hospital.
Years later, I was reminded of their dedication when my father suffered a massive heart attack. Despite being in poor health, his sudden cardiac event required an urgent response. My family was struck by how professional and capable the EMS team was, even facing the logistical challenge of moving a large man on a gurney up a challenging, hilly gravel road.
These two defining moments burned a truth into my mind: the day-to-day commitment of emergency medical services is a constant, selfless act. The effort, the emotion, and the continuous mental weight they carry on behalf of strangers are the core of their profession—and they inspire me.
Our Executive Team
John Kepley, CEO
Chief Executive Officer
John Kepley is the founder and CEO of Solved Healthcare, leading the company’s mission to revolutionize training through AI-powered, gamified microlearning for healthcare professionals. With more than 25 years of executive experience across technology, healthcare, and education, John has founded and scaled multiple successful ventures focused on innovation, workforce development, and strategic growth.
Recognized as one of Nashville Business Journal’s 40 Under 40 and a Power Leader in Technology, John has built a career centered on creating technology-driven solutions that improve how people learn and work. He has served in leadership and advisory roles for organizations such as the Nashville Technology Council, HIMSS Tennessee, and the Nashville Chamber’s STEM initiative.
Based in Tennessee, John brings a proven track record of entrepreneurship, strategic vision, and operational excellence—driving Solved Healthcare’s commitment to improving education, efficiency, and engagement across the healthcare industry.
Kevin Jacobs, COO
Chief Operations Officer
Kevin Jacobs is a lifelong learner with a passion for strategy. He holds a doctoral degree focused on implementing strategy through project management and brings 20 years of experience leading IT projects in large organizations. In 2020, Kevin transitioned to serve as a fractional COO and EOS Integrator for small businesses, gaining deep insight into the unique challenges faced by organizations with $3–10M in annual revenue.
In 2022, Kevin acquired his first small business, a pest control company, and in 2025 added an automotive repair shop to his portfolio. Alongside these ventures, he has contributed to the launch and growth of Solved Healthcare, an innovative EMS training platform delivering scenario-based education to professionals in the field.
Recognized for combining strategic vision with practical operational expertise, Kevin is committed to supporting small business growth, advancing EMS education, and sharing insights gained through years of professional experience.
Tara Massarelli, CPO
Chief Product Officer
Tara Massarelli is a nationally registered paramedic with more than 25 years of experience, Tara brings a wealth of knowledge in paramedicine, certified peer supporter, engineered a start-up community paramedicine program, marketing, website design and former firefighter. She has successfully launched multiple ventures and is currently working alongside her organization’s CEO and COO to develop a user-friendly software application designed to simplify and empower the end user.
Tara is known for her compassion and heart for people. She actively serves and volunteers within her community, bringing a perspective centered on empathy and service. Guided by her faith in Jesus Christ, she approaches every day with determination and purpose.
As a Chief Product Officer, Tara runs an incredible team, breathing life, inspiration, and focus into their shared mission. Her passion for innovation, service, and faith-driven leadership continues to leave a lasting impact on the people and projects she touches.
Brett S. Greenfield, CMO
Chief Medical Officer
Brett S. Greenfield, DO, FACOEP, FAEMS, is a nationally recognized emergency physician, EMS medical director, and Chief Medical Officer at Solved Health AI, with over 25 years of experience transforming prehospital and emergency care. Beginning his career as an EMT, Dr. Greenfield quickly advanced through clinical and leadership roles, completing residency and fellowship training in emergency medicine and EMS. He has led large-scale EMS, air medical, and mobile health programs, overseeing multidisciplinary teams, implementing quality initiatives, and driving innovation in patient care and system operations.
In his role at Solved Health AI, Dr. Greenfield applies his clinical expertise to develop cutting-edge mobile education tools for prehospital clinicians, integrating advanced technology with practical emergency care training. Throughout his career, he has served as a medical director for multiple organizations, guided the development of medical devices as a global industry advisor, and held academic appointments to mentor the next generation of emergency providers. Recognized for his contributions to emergency medicine and EMS leadership, Dr. Greenfield remains committed to improving outcomes, advancing clinical excellence, and shaping the future of emergency care.
Our Team Members
Reynold Yordy
Advisor
As a seasoned Healthcare IT and Media Entrepreneur, bringing 30 years of experience leading innovative ventures that transform healthcare delivery and patient engagement. I have successfully managed a diverse portfolio of companies focused on behavioral health, EHR solutions, revenue cycle management, and healthcare financing. My career journey spans executive leadership roles including CTO, VP of Business Development, and Product Management, where I have driven technology strategy, business growth, and cross-functional collaboration.
Alan Young
Advisor
Alan Young is the CEO of Armor Concepts LLC, a Nashville, TN-based manufacturer that distributes security and repair products throughout the US and Canada. He received a BS (in 3 years) and an MBA from Vanderbilt University, while earning all-conference football honors. Sack records Alan set have stood for more than 30 years. Following a brief professional football career and 8 years as an M&A Banker, Alan began rehabbing properties. Break-ins on these properties led to the creation of Armor Concepts. Alan is a 3-time winner of Nashville’s Most Admired CEO Award and has been named to Nashville’s Power 100 list. He and his wife, Monette, have 4 adult children.
Greg Miller
Advisor
Experienced Fire/EMS Chief with a demonstrated history of working in the government administration and the Private EMS industry. Skilled in Municipal Fire Service Leadership, Private EMS Leadership, Crisis Management, Vehicle Extrication, Government, Law Enforcement, and Emergency Management. Strong fire, EMS, and protective services professional with an EFO focused in Management & Leadership from the National Fire Academy and a Chief Fire Officer designation from the Center for Public Safety Excellence.
Dr. Amanda Derington
Advisor
Dr. Amanda Derington is an Emergency Room physician at Tristar Skyline Medical Center, a Level 1 Trauma Center, and is the EMS Medical Director for Tristar. She completed her emergency medicine training at Indiana University and then went on to complete a fellowship in Emergency Medical Services, with an emphasis on tactical medicine. Dr. Derington is also a Lieutenant Colonel in the United States Army National Guard, where she has served for 15 years. She has deployed twice and currently functions as the brigade flight surgeon for an expeditionary combat aviation brigade. She loves all aspects of EMS, but her passion lies in tactical medicine.
Jim Bressoud
VP of Data Analytics
James Bressoud is the Vice President of Data Analytics and an accomplished cross-functional leader with extensive experience in BI and program management. He has a proven record of helping organizations enhance ideation and financial outcomes through leadership and hands-on execution. James has achieved success in resource management, process improvement, and operations.
Patrick Faulkner
Director of Operations
Patrick Faulkner serves as Director of Operations at Solved Health, where he applies military technical training, police leadership experience, and business strategy to scale scenario-based EMS education. He builds operational frameworks, strengthens product delivery, and aligns cross-functional teams to drive training quality, platform performance, and customer impact.
Jeremiah Partin
Quality Assurance Team
Jeremiah is a paramedic professor and clinical research consultant with extensive experience in EMS education, flight medicine, and critical care. Specializing in clinical research and data-driven solutions to improve emergency medical services.
Cody Miller
Quality Assurance Team
Cody Miller is a nationally registered paramedic and fire service professional with 19 years of EMS experience across rural and metropolitan systems. He specializes in advanced life support, incident command, and training delivery, with 15 years of leadership in busy ALS fire departments. Cody now offers his expertise as an EMS consultant and expert witness.
Michael Dunaway
Quality Assurance Team/Lead Instructor
Mike joins our team as Solves first full-time instructor for online live training. Mike is a NAMSE National EMS educator with years of experience. Mike holds a paramedic license and critical care license in multiple states. Earning his Masters degree, Mike continues to educate our customers not just by the topic of the night but by incorporating the entire well-being of the EMS clinician.
John Erbayri
Quality Assurance Team
With more than 27 years in EMS and public safety and over 15 years in education and program development, John Erbayri is a certified healthcare simulation educator and experienced paramedic. He holds a Master of Science in Organizational and Strategic Leadership and a Bachelor of Science in Liberal Studies (Healthcare Administration) from Neumann University, as well as an Associate of Applied Science in Paramedic from Delaware County Community College. He also completed advanced instructor training in simulation-based education through Harvard University (hosted at Drexel University College of Medicine).
Jack McCormack
Quality Assurance Manager
Jack McCormick brings over 30 years of EMS and healthcare experience, spanning frontline paramedicine, hospital-based clinical leadership, and higher education. He currently serves as EMS Education Clinical Coordinator at Athens Technical College, where he manages clinical placements, develops evaluation tools, and oversees student progress to meet state, NREMT, and CoAEMSP requirements. Previously, he established and directed Athens Tech’s AHA Training Site, providing ACLS, PALS, PHTLS, EPC, NRP, and BLS training to hundreds of healthcare professionals annually, while also managing simulation-based education programs.