John Markley serves as Regional CEO, Illinois, serving residents in eastern and southern Illinois through more than 30 locations, providing treatment, support and educational programs and services to individuals who have mental health and addiction disorders and specialized services for adults with intellectual and developmental disabilities. Centerstone employs over 525 staff in Illinois and serves more than 17,000 individuals annually. Under Markley’s leadership, Illinois’ operations have expanded from serving residents in southern Illinois to include western Illinois following a 2015 merger with Wellspring Resources in Alton, IL (now Centerstone). He has served on several national and statewide boards and is currently a member of several state and national associations. Markley began his behavioral health career in 1985 as a staff accountant, was promoted to Director of Financial Services, and became CEO in 2005. He received his bachelor’s in criminal justice and in accounting from Murray State University in Kentucky, and he earned his MBA from Century University in New Mexico. As CEO, Markley is responsible for the leadership and operational oversight of Centerstone’s clinical divisions, specialized services and strategic business development and fiscal accountability in Illinois.

Anne Tyree, MPA, CFRE, is Regional Chief Operating Officer. In this role she oversees all operations, administrative, and support systems for 600 employees serving more than 12,000 clients annually. In prior roles Tyree served as Chief Administrative Officer and as Chief Financial Officer.

She has over 20 years’ experience in strategic business planning, marketing, financial reporting and budgeting, business development, and capital project development. Tyree received her bachelor’s degree from the University of Illinois Chicago and her MPA with an emphasis on health care from American Public University.

She has led a number of state and local boards and commissions, and is a Past President of the Community Behavioral Healthcare Association of Illinois. Born and raised in Chicago, She now lives in rural Jersey County in Southwestern Illinois.

Dr. Mirza Baig received his MD from Kakatiya Medical College in India and completed his psychiatric residency at the Missouri Institute of Psychiatry. He is board certified in addiction medicine, psychiatry, forensic psychiatry, geriatric and administrative psychiatry, and has over 35 years of experience in psychiatric medicine.

Dr. Baig has served as Medical Director for Centerstone in Illinois and its legacy organizations for nearly 15 years. Previously, he managed the forensic unit of an Illinois state operated facility for 20 years. He is an avid advocate for our clients and programs.

Janette Heath is an LCPC with almost 20 years of experience at Centerstone and its legacy organizations in assessment, crisis, community-based services, counseling and administration in Illinois. She oversees clinical training, implementation of evidenced-based clinical models and measurement of clinical outcomes for clients.  Health also is responsible for quality and health information management. She received her BS in Psychology with a minor in Sociology from Culver-Stockton College and her MA in Human Development Counseling with an emphasis in Community Counseling from the University of Illinois-Springfield. She is a member of Chi Sigma Iota, the National Honor Society for counseling professionals.

Brianna Waller, LCPC, is the Compliance & Privacy Officer in Illinois where she administers and oversees the Compliance & Privacy programs. She assists in the development, implementation, maintenance, and revision of policies and procedures for the general operation of the Compliance & Privacy programs and their related activities in an effort to detect and correct illegal, unethical, or improper conduct or privacy violations.

Waller received her BA in psychology and her MS in Rehabilitation Counseling from Southern Illinois University Carbondale. She received her LCPC in 2017. She has worked for Centerstone and its legacy organizations for a combined 9 years. Waller has completed the required intensive training necessary to achieve certification by the Health Care Compliance Association.

Jean Alstat serves as Clinical Director for behavioral health, community and prevention services in the Carbondale, Marion and West Frankfort offices in Illinois. In this role she oversees a variety of services including Prevention, Early Head Start, Community Outreach, Family Services and Outpatient Services.

Alstat received her MA in Educational Psychology with a specialization in Community Counseling. She has the National Counselor Certification and has worked for Centerstone and its legacy organizations for 20 years. She is a long-term resident of Jackson County.

Andrea Quigley is the Clinical Director at Centerstone in Illinois. Quigley will oversee the Medication Assisted Treatment (MAT) clinic implementation and grant, and oversee customer care services and outpatient counseling services for Carbondale, Marion and West Frankfort outpatient offices, and the Bureau of Federal Prisons Halfway House.

Prior to joining Centerstone, Quigley worked at Lutheran Social Services of Illinois as a master child welfare specialist from January 2009 to July 2010 and then child welfare supervisor from July 2010 to December 2015.

Quigley obtained Master of Arts in psychology and doctoral degree in psychology from Southern Illinois University in Carbondale.

Helen Blackburn is Clinical Director of Vocational & Residential Services in Illinois. In this role she oversees residential and vocational programming for individuals with intellectual or developmental disabilities and/or mental health needs.

Blackburn received her MS in Rehabilitation Counseling from Southern Illinois University. She is a qualified intellectual disabilities professional (QIDP) and a licensed clinical practicing counselor (LCPC). She has worked for Centerstone and its legacy organizations for a combined 11 years. She resides in Carbondale.

Emily Dellamano is the Director of Quality Improvement in Illinois. In this role she provides day to day Quality Improvement oversite to programs and staff. She is also involved in ensuring that the organization is adhering to all certification, licensure and accreditation standards. Dellamano received her Masters of Social Work from Southern Illinois University- Edwardsville. She has worked for Centerstone and its legacy organizations since 2009. She was born and raised in the Alton area and resides in Madison County, IL.

Kimberly A. Fleck, Human Resources Director, has worked for Centerstone and its legacy companies in Illinois for more than 30 years. Fleck has experience in support services, administration and human resources over the course of her career. She began working in Human Resources specifically in 1998 and was promoted to Director in 2012.

In 2009, Fleck was certified as Professional in Human Resources (PHR), and in 2015 as a Society for Human Resource Management-Certified Professional (SHRM-CP). She is a long term resident of Franklin County.

Rebecca Hudzik, LCPC has been with Centerstone and its legacy organization for over 10 years in residential, community-based, quality improvement and administration in the behavioral health field. She currently serves as a Clinical Director for Centerstone of Illinois in Alton. In this role she oversees a variety of services, including residential and community-based programming for adult individuals experiencing serious mental illness. Hudzik received her Master’s degree in Professional Counseling from Lindenwood University.

Megan Klaas is Operations Director in Illinois, overseeing the grievance and Office of Inspector General (OIG) processes, statewide credentialing, health and safety functions, and the credentialing and operations support staff. Klaas supports and guides the operation team’s budgeting processes, as well as organizes and monitors the submission of state required reporting.

She previously served as Credentialing System Manager at Centerstone from March 2017. Klaas plans to work toward obtaining the Certified Provider Credentialing Specialist certification.

Angela Manns is Director of Medical Services in Illinois. In this role she is responsible for managing statewide psychiatric and medical resources, and the state’s Medication Assisted Treatment services for adults addicted to opiates. In addition to recruiting and supervising all Illinois nursing staff, she is very involved in recruitment and hiring of physicians and nurse practitioners for the organization.

Manns received her BS in nursing from Kaplan University in Davenport, Iowa and is currently pursuing her MS in Nursing from Maryville University in St. Louis. She has worked in medical services and Medication Assisted Treatment for Centerstone and its legacy organizations for five years.

Stacey Overturf serves as Director of Finance in Illinois. In this role, she oversees the organization’s fiscal operations, supervising finance and accounts receivable staff. Overturf received her BA in accounting from Southern Illinois University Carbondale. She has worked in finance for Centerstone and its legacy organizations for almost 30 years. She is a long-term resident of Franklin County.

Deniece Shivers serves as the Housing and Facilities Director in Illinois. In this role, she manages the facilities and permanent housing offered by Centerstone in Alton.

Shivers received her BS in Business Management from the University of Phoenix in St. Louis, MO. She also received her Assisted Housing Manager Certification for HUD housing. She has held multiple roles for Centerstone and its legacy organizations for over 19 years.

Stephanie Terry is Clinical Services Director in Illinois. In this role, she oversees a variety of services including Access, Family Services and Outpatient in the Alton office. This also includes two federal grants to address the impact of substance use for adolescents, young adults and families. Terry received her Bachelor of Science in Psychology and Master of Social Work from Southern Illinois University of Edwardsville. She is a Licensed Clinical Social Worker (LCSW) and certified School Social Worker. She has worked for Centerstone and its legacy organizations for 6 years. She is a long term resident of Madison County.

Chrissy Wedel serves as Director Customer Experience in Illinois. In this role she works to improve Customer Service, supervises Customer Experience Specialists, serves on an Enterprise Customer Improvement Team, works with the Customer Experience sub-group affiliated with the Board of Directors and acts as the team lead for Customer Experience in numerous special projects. Wedel has worked in the Customer Service field for almost 27 years and worked for Centerstone and its legacy organizations for more than 10 years.

Elena Voigt serves as Executive Assistant to John Markley, Regional CEO, Illinois. She has been in that position since January 2015. Previously, she was Accounting Coordinator for Centerstone and its legacy organizations, where she has worked for more than 22 years. She resides with her husband in rural Southern Illinois.