Trey Ligon is the CEO and Co-Founder of American Medical Network Inc., a Healthcare Management Service Organization providing business and clinical solutions to the healthcare community for over 28 years. Trey manages and develops IPA’s and large medical group networks throughout the United States. He brings a comprehensive medical administration knowledge in managing physician groups and forming large integrated medical practices for over three decades. Through his relationship with many large insurance companies, he has represented and builds networks with Commercial HMOs, PPOs, Self-Insured Groups, Hospital Plans, Medicare Advantage Plans, Medicaid Networks and ACOs. He brings an extensive knowledge in building, managing, creating and organizing large provider organizations into clinically integrated networks that can provide a risk structure for independent physician groups.  Trey also serves on many healthcare boards including, Insight Behavioral Health Network and Accountable Care Inc. 

Dr. David Berry is CMO and Co-Founder of American Medical Network, Inc.  He brings deep medical, business and leadership. He has ç as a clinical associate professor at the University of Nevada Medical School and diplomate of the American Board of Urology. Committed to cutting-edge medical research, his roles have ranged from advisory boards to principal investigator for clinical trials. In addition to his clinical and scientific achievements, Dr. Berry is also an accomplished entrepreneur and business executive, having founded multiple profitable healthcare companies spanning surgical and oncology radiation centers, medical management, and health insurance.


Teresa Sullivan is an accomplished executive with 20 years of diverse work experience in patient care, marketing, physician relations, practice management, and business development. Tary’s expertise lies in breaking down barriers, improving processes, and most importantly interpreting the needs and desires of clients with my unique use of strategy. Tary has a track record that demonstrates self-motivation, creativity, and high learning agility to achieve operational objectives which brings me deep satisfaction.


Tary has a unique ability to successfully communicate across a wide spectrum of audiences, leading change initiatives, having strong financial and organizational skills and being able to function effectively with multiple priorities. She promotes continuous learning and employee development through mentoring and coaching, continuing education and continuing education compliance. Tary also employs hiring and training- best practices, leads in HR compliance, and recruitment efforts. 

She collaborates with the financial departments of revenue cycles, managed care, and billing departments to optimize financial performance all while ascertaining the impact of decisions and trends on finance to help determine if an adjusted course of action should be taken.