Unrivaled Protection, Unparalleled Savings

AMPS COO/CTO Kirk Fallbacher

Kirk Fallbacher


Kirk was appointed President of AMPS in 2018, after joining AMPS as COO/CTO in 2016 and is responsible for daily operations, technology and all services. Kirk is a seasoned technology executive with over 20 years experience serving Healthcare and Insurance, combined with in-depth expertise in IT strategy, service delivery, enterprise integration, application development, and analytic solutions. Kirk has also worked in leadership roles at several consulting and software firms that, in some capacity, have all served the healthcare market. His past clients have included multi-facility Integrated Delivery Networks, Children’s Hospitals, Community Hospitals, Physician Groups, National Payers and Healthcare IT Vendors. Kirk holds an undergraduate degree in Computer Science and Mathematics, Western Illinois University, Cum Laude. He is also a member of numerous healthcare advisory boards for companies and foundations.

AMPS CMO Mark Medvedeff

Mark Medvedeff, MD


Mark served AMPS predecessor company as Medical Director for several years and assumed the roll of Chief Medical Officer in April 2005. From 1978 until 1997, Mark practiced emergency medicine full time and was the Medical Director for three Emergency Departments. He contributed significantly to the clinical management and Utilization Review processes for two local hospitals by his participation on multiple management committees. Since 1997, Mark has supported several third-party administrators by providing large claim review, as well as appeals and eligibility review. Additionally, he was regularly called upon to provide independent claim review services to corporations, health insurance providers and individuals. Dr. Medvedeff received his undergraduate degree from Ohio State University and his M.D. from Ohio State University College of Medicine.

AMPS EVP of Sales & Marketing John Powers

John Powers

EVP of Sales & Marketing

As one of the most visible healthcare cost management experts, John has lectured across the nation and at international conferences on five continents. He has been interviewed by national media including A&Es Investigative Reports, Dateline NBC, 60 minutes, Business Insurance, Claims Magazine and the New York Times. John is the coauthor of Surveillance Risk Management 101 and the author of Greenhorn Traveler. He is widely known as one of the most successful fraud investigators in the industry having conducted investigations in all 50 states and over 120 countries internationally.


Stewart W. Karge

Chief Legal Officer

Stewart joined AMPS in 2016 and is responsible for its legal operations. Prior to joining AMPS, he was a Capital Partner and practice group leader at the Chicago office of McDermott Will & Emery, one of the largest law firms in the world. He defend or prosecuted cases for a variety of clients, including Fortune 500 companies in multiple industries. Stewart holds a Juris Doctorate from Northwestern University and a B.S. from Indiana University. He is admitted to practice before the following courts: United States Supreme Court, U.S. Court of Appeals for the Seventh Circuit, U.S. District Court for the Northern District of Illinois (Trial Bar), U.S. District Court for the Eastern District of Wisconsin, State of Illinois and State of Georgia.

AMPS VP of Client Services Karen OBrien

Karen OBrien, RN

VP of Client Services

Prior to joining AMPS in 2005, Karen worked as a Patient Financial Services Representative for WellStar Health System, a large healthcare system in Atlanta. In that capacity, she worked with patients and insurance representatives to resolve billing and payment issues. Karen’s experience includes four years with GlobalCare, a large claims repricing aggregator. In her position as Manager of Claims Administration, Karen worked with the technology team and programmers to design an in-house claims repricing system to facilitate the company’s business expansion from travel care to claims repricing. She organized and managed the claim-repricing department and recruited and trained customer service and support staff. Karen is a graduate of Columbus School of Nursing, St. Anthony’s Hospital in Columbus, OH and spent three years as a pediatric nurse before venturing in to health care in a role other than bedside nursing.