About: Leadership Team

John I. 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. 


Samantha 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.


Laurie Carrier, MD

Chief Medical Officer

Dr. Laurie Carrier joined the Trilogy team as Chief Medical Officer in 2015.  She provides primary care services, psychiatric consultation, and general oversight of Trilogy's Integrated Healthcare Program. Dr. Carrier received her medical training from the School of Medicine at Trinity College Dublin, The Republic of Ireland. She completed her residency at the University of Cincinnati College of Medicine in combined family medicine and psychiatry. Dr. Carrier also acts as the Interim Medical Director at Heartland Health Centers, Trilogy's primary care partner, where she oversees all clinical operations. Dr. Carrier is an Associate Professor at Northwestern University Feinberg School of Medicine, Department of Community and Family Practice and teaches integrated healthcare through the Northwestern Family Medicine Residency Program. Dr. Carrier's interests include preventive health, global health, and anxiety and mood disorders.


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.


Phillip Hall

Chief Financial Officer

Phillip Hall joined Trilogy as Chief Financial Officer in 2014. Phillip is responsible for all organizational financial activities, including business planning operations, financial analysis, budgeting, accounting, and the financial audit function. Phillip received his Bachelor’s Degree in the Social Sciences from the University of Chicago and his Master’s in Business Administration from Harvard University. Phillip has more than 20 years of experience in Financial Management and has worked in Chicago area not-for-profits since 2002. His previous employers include the LaSalle Foundation, Esperanza Community Services and the Institute for Latino Progress. Phillip has managed non-profits during extreme growth and has managed budgets of over $100 million. He has experience operating in several social service areas including: early intervention for infants; housing, case management and training for Chicago residents with developmental disabilities; after school programming and alternative high schools for urban youth; job training and literacy for working adults; and day-wellness programs and affordable housing for seniors. Throughout his career, Phillip has served as a member of the Board of Directors for other area non-profits including the Woodlawn Development Associates, the Open Studio, Gads Hill Center, and Mental Health America Illinois.


Ruth A. McMahon

Chief Development Officer

Ruth McMahon became Chief Development Officer in 2013 after serving as Director of Development and External Affairs since December 2006. Ruth’s responsibilities include creating and implementing overall development, marketing, and public relations plans and strategies. She partners with Trilogy’s Board on all fundraising efforts and activities. Ruth earned her undergraduate degree in management from Purdue University in West Lafayette, Indiana in 1987. Before focusing on development, Ms. McMahon served for many years as a Regional Sales Manager and as a Marketing Services Manager. Her experience in fundraising and community outreach include benefit Chair positions and business development within the Catholic Archdiocese of Chicago. Ruth has been an active member of Association of Fundraising Professionals since 2007.