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. His many accomplishments included a significant expansion of Thresholds’ nationally recognized training program. 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. A former President of the National Alliance for the Mentally Ill-Greater Chicago, he currently serves as Treasurer of the Board for NAMI-IL and an active Board member of the Northshore Mental Health Association.
Sara Gotheridge, MD
Chief Medical Officer
Dr. Gotheridge joined the Trilogy team in 2003 in the Psychiatric Services Department and became the agency’s Medical Director in 2007. In addition to managing a private practice, Dr. Gotheridge provides psychiatric consultation and oversight of Trilogy’s Psychiatric Services Department. She also provides direct supervision of Trilogy’s Medical Services Coordinator and the Integrated Healthcare Program as a whole. Dr. Gotheridge is a Board Certified psychiatrist who received her medical training from Northwestern University’s Feinberg School of Medicine. She has taught and lectured at Northwestern University and throughout Chicago.
Samantha Handley, LCPC, CSADC
Chief Operations Officer
Samantha Handley became Director of Operations in 2009 after serving as Director of Human Resources and Program Content since 2007. Samantha is responsible for managing Trilogy’s Human Resources, helping and creating organizational and program policies, managing all facilities, and overseeing volunteer activities. 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 12 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.
Kandis Cossom
Chief Financial Officer
Kandis Cossom became Director of Financial Services in January of 2008 after serving as Financial Services Department Manager since 2004. Kandis oversees all organizational financial activities, including accounting and business planning operations, accounts receivable and payable, and the financial audit function. She also supervises the Purchasing department. Kandis began at Trilogy as an accounting clerk in 2000 and earned her business degree from Robert Morris College in 2004 with the intent of continuing on the path of financial management at Trilogy. She is committed to the mission and community of Trilogy.
Susan Doig, LCSW
Chief Clinical Officer
Susan Doig became Director of Clinical Services in 2009 after serving 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.
Ruth A. McMahon
Chief Development Officer
Ruth McMahon joined Trilogy as the Director of Development and External Affairs in 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.
