The Leadership Team



John Mayes, LCSW, CADC

President & CEO

John Mayes was appointed President and CEO of Trilogy in January 2006. He came to Trilogy from Thresholds, where he rose from Program Coordinator to Associate Director. At the time of his departure, he managed most of the agency’s programs on Chicago’s South and West sides and the Near-West suburbs. During Mayes’ tenure at Trilogy, he has focused on developing community partnerships to help bridge funding and service gaps and ensure that barriers to primary and behavioral healthcare are reduced or eliminated for our clients on their path of recovery. Through these partnerships and diversified funding, Trilogy has been able to create a nationally recognized Integrated Healthcare program, a 365 days–a-year Peer-to-Peer Drop-In Center for clients and those who are without entitlements, on site targeted as well as routine HIV testing and counseling within the Drop-In Center, and an evidence-based Family Psycho-education Program. On July 1, 2012, under Mayes’ leadership and as an expansion of Trilogy’s health and wellness initiative, Trilogy became a Smoke-Free Campus and in November of the same year Trilogy was named one of Chicago Tribune’s 2012 Top Workplaces. Mayes is a Licensed Clinical Social Worker and Certified Alcohol and Other Drug Abuse Counselor (CADC). He earned his Master’s Degree in Social Work at the University of Illinois at Chicago. Mayes is a former President of the National Alliance for the Mentally Ill-Greater Chicago. 


BHP_2037.jpgSamantha Handley, LCPC, CSADC

Vice President

Samantha Handley became Vice President in 2013 after serving as Director of Operations since 2009 and Director of Human Resources and Program Content from 2007-2009. Samantha is responsible for creating and implementing organizational and program policies, managing Trilogy’s Human Resources, and overseeing all operations. Samantha received her Bachelor’s Degree in Psychology from the University of Pittsburgh and her Master’s Degree in Counseling from West Virginia University. She is a Licensed Clinical Professional Counselor and a Certified Supervisor Alcohol and Drug Counselor. Samantha has over 16 years of clinical supervisory experience in both inpatient and outpatient settings in Chicago, Los Angeles, and Cleveland. In addition, she has presented at both local and national conferences as well as co-authored an article published in the Psychiatric Rehabilitation Journal.


BHP_1711.jpgRich Adelman, CPA

Chief Financial Officer

Rich Adelman became Chief Financial Officer in 2017. He has more than 30 years of experience in financial management, with an emphasis on business improvement. Prior to joining Trilogy, Rich was the Vice President of Finance for an organization that provides recovery services for persons with mental illness and substance use disorders. In his role at Trilogy, he oversees all strategic and tactical initiatives as they relate to budget management, cost benefit analysis, forecasting, and risk management. Rich is registered in Illinois as a Certified Public Accountant (CPA), and has an MBA from DePaul University. He has extensive experience in administrative best practices and looks to strengthen the organization’s financial groundwork.


Dr. Matthew Brown, DO, MBA, ABPN

Chief Medical Officer

Dr. Matthew Brown became Chief Medical Officer in 2018. Dr. Brown brings his extensive experience to Trilogy, having worked at all levels of mental health treatment starting as a mental health technician and moving on to work with children and adults as a psychiatrist.  He is a thought leader in the area of mental health technology and “whole health psychiatry”. He is double board certified by the American Board of Psychiatry and Neurology, holds an MBA in healthcare leadership, and prides giving back to the community via public education and his work with nonprofit organizations. Dr. Brown is an accomplished author and presenter having been published in peer reviewed journals and book chapters. He has presented at conferences worldwide on the topics of trauma, attachment, and the role of psychedelic substances as medicine. 


Susan Doig, Chief Clinical Director at Trilogy Behavioral Healthcare

Susan Doig, LCSW

Chief Clinical Officer

Susan Doig became Chief Clinical Officer in 2013 after serving as Director of Clinical Services and as Assistant Clinical Director since September of 2005. Susan is responsible for the development and oversight of Trilogy’s clinical services and programming including Integrated Services as well as Trilogy’s Frequent User Jail Program. After receiving her bachelor’s degree from University of Missouri in 1993, Susan began her career at Trilogy in 1994 as a Recovery Counselor. Susan left Trilogy in 1997 to attend graduate school at the University of Illinois in Chicago. Following graduation, Susan spent eight years in the mental health field assisting individuals with serious mental illness who were returning to the community from Cook County Jail. Her current focus is on strengthening partnerships, collaborations, and taking the lead on clinical services at Trilogy. Susan also serves as Trilogy’s representative to the Mental Health Summit of Illinois.