Staff Leadership


Christine McCall, MSW, LCSW, CADC
Interim Executive Director
Christine McCall, CADC, holds a Master’s of Social Work degree from Loyola University Chicago School of Social Work and is a licensed clinical social worker. She developed and coordinates the HEALING CONNECTIONS Intensive Outpatient Program and Aftercare Program at PEER Services. She is the chair of the Coalition on Substance Use and Aging, as well as an active member of multiple community professional groups and leads presentations and training on substance use and aging, including most recently at the University of Chicago.  Prior to her work with PEER Services, Christine provided clinical case management and therapy to individuals with dual diagnosis in a supportive housing program in addition to linking them with stable housing opportunities in Chicago.

Bobby Carbage, MS, CRADC
DUI Services Coordinator
HIV Testing and Counseling Services Coordinator
Bobby is a Certified Reciprocal Alcohol and Drug Counselor with 30 years of experience providing substance use treatment services. Bobby joined PEER Services in 2001 and currently coordinates our DUI Services as well as HIV Testing and Counseling Services. He has a Master’s Degree in Human Resources Administration from Spertus College and a Bachelor’s Degree in Human Services from Northeastern University.

Bobby has worked for several local service providers during his thirty year career. He
is considered an expert in treatment services delivered in community and prison settings. He worked as an administrator in prison programs in three states over a ten year period and considers that to be one of the highlights of his career. Bobby is often asked to share his expertise in the field through presentations to high school and college groups. He received the Judy Miller Award in 2000 and the Monsignor Ignatius McDermott award in 2002.

Gretchen Igliori, MSW, LCSW
Medication-Assisted Treatment Services Coordinator
Gretchen is the Coordinator of PEER’s Joint Commission Accredited Adult Medication-Assisted Treatment Services. She is a Licensed Clinical Social Worker with more than ten years of experience in treating substance use disorders. Gretchen joined the PEER Services staff in 2001, after working in areas including domestic violence, grief and loss, HIV/AIDS care, homelessness, and mental health.

In addition to her Coordinator responsibilities, Gretchen manages intern recruitment and training for PEER Services’ highly successful Medication-Assisted Treatment internship program. She has a Master’s Degree in Social Work from Indiana University and an undergraduate degree in Sociology, along with certificates in Women’s Studies and Public and Environmental Affairs, from Indiana University. Gretchen received the Judy Miller Scholarship Award from the Illinois Alcoholism and Drug Dependence Association in 2010.

Silvia Acosta, AM, LCSW
Adolescent Program Coordinator
Being an immigrant herself, Silvia has dedicated her career to providing culturally competent mental health and substance use services to immigrant families and multicultural urban youth. Silvia holds a Master’s degree in clinical social work from the University of Chicago and a Bachelor’s degree in psychology from Florida International University. Silvia has specialized training in Motivational Interviewing, Mindfulness-Based Relapse Prevention, and trauma-informed substance abuse counseling.

She began her career at the Community-Based Intervention Research Group in South Florida where she devoted her efforts to the design, implementation, and evaluation of community-based interventions addressing substance use and other problems facing ethnic minority high school students and young adults. Silvia was recently published in the Journal of Ethnicity in Substance Abuse and has presented her work at various national conferences, including the Joint Meeting on Adolescent Treatment Effectiveness, the Convention for Behavioral and Cognitive Therapies, and, most recently, the National Gang Crime Research Center Conference.

In her current role at PEER Services, Silvia coordinates the adolescent outpatient and intensive outpatient program across both the Evanston and Glenview sites. In addition to her supervisory duties, Silvia provides supportive and integrated clinical services in both English and Spanish to youth of diverse ages and their families with the goal of empowering them to take control of their own lives and thus, promote personal growth and well-being.

Erin Tegge, AM, LSW
Prevention Program Coordinator
Erin Tegge is the Prevention Program Coordinator at PEER Services providing direct prevention services to Evanston and the surrounding communities.  Since 2014, Erin has been with PEER Services as a Prevention Specialist.  She has over eight years of experience in the field of Social Work and has worked with youth, families and adults in a variety of capacities.   Erin is also a resident of Evanston.  Erin previously attended the University of Illinois at Urbana-Champaign where she received her B.S. in Psychology.  She continued her studies at the University of Chicago, where she graduated with a Masters in Social Service Administration (Social Work).

Erin works closely with the Evanston, New Trier and Glenview/Northbrook communities and provides consultation on best practices in youth substance abuse prevention to schools, community organizations and coalitions, collaborates with school social workers and educators and oversees agency program implementation and evaluations, collects and analyzes data to measure effectiveness of programs, uses data to inform prevention programming and manages state and local grants.

Sarah Anker, MSW, LCSW
Coordinator of Adult Treatment and Professional Development
Sarah Anker is PEER Services’ Coordinator of Adult Treatment and Professional Development.  She launched the Young Adult Treatment program, including an Intensive Outpatient group in March 2016. This program seeks to serve the specific needs of clients 18-26 years old. She is currently involved with Prepared for Adult Life, a subcommittee of Evanston Cradle to Career.

Sarah has 4 years experience working with families, adults, and young adult clients. Sarah completed her Masters in Social Work in 2012 from Washington University in St. Louis with a concentration in children, youth, and families. She has a BA in Psychology and Sociology with emphasis in Criminal Justice. She is currently a Licensed Clinical Social Worker in the State of Illinois.

© 2017 PEER Services

906 Davis Street, Evanston, IL 60201 - 847-492-1778
3633 W. Lake Avenue #305, Glenview IL 60026 - 847-657-7337

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