John Markley, MBA – Regional Chief Executive Officer
John Markley serves as Regional CEO, Illinois, for the state’s largest behavioral healthcare provider, 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 eastern Illinois following a 2015 merger with Wellspring Resources in Alton, IL (now Centerstone).

John has served on several national and statewide boards and is currently a member of several state and national associations.

John 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, John 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 – Regional Chief Operating Officer
Anne Tyree, MPA, CFRE, is Regional Chief Operating Officer, Illinois. Previously, she served as WellSpring Resources’ Chief Development Officer/Chief Financial Officer. Tyree has over 20 years of experience in marketing, strategic business planning, budgeting, business development, advocacy, public relations, non-profit fundraising, capital project planning and funding and supportive housing development and construction.

Tyree received her bachelor’s degree from the University of Illinois at Chicago and her MPA with an emphasis on health care from American Public University. She is Vice President for the Community Behavioral Healthcare Association of Illinois and serves on the Madison County CSBG Advisory Group. Previously, she served as Vice President of the Supportive Housing Provider’s Association of Illinois, on the Governor’s Task Force for Supportive Housing and as co-chair of the Madison County Illinois Continuum of Care. Born and raised in Chicago, She now lives in rural Jersey County in Southwestern Illinois.

Mirza S. Baig, MD – Regional Chief Medical Officer
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.

Cathy Moehring, MPS, LCPC – Vice President of Quality Improvement

Cathy Moehring, LCPC, is Vice President of Quality Improvement in Illinois. In this role, she provides oversight and leadership of the organization’s quality improvement systems. This includes ensuring the organization is adhering to all certification, licensure and accreditation standards.

Moehring received her BA in psychology and sociology, and her MA in Public Administration from Southern Illinois University Carbondale. She has over 35 years of experience with Centerstone and its legacy organizations in quality improvement and clinical operations. She is a long-term resident of Union County.

Jean Alstat, MSEd, QMHP – Clinical Director
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.

Helen Blackburn, MS, LCPC – Clinical Director of Vocational & Residential Services
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.

Kimberly Fleck, PHR, SHRM-CP – Human Resources Director
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.

Janette A. Heath, MS, NCC, LCPC – Director of Clinical Excellence
Janette Heath, LCPC has almost 20 years of experience at Centerstone and its legacy organizations in assessment, crisis, community-based services, counseling and administration in Illinois. In this role, she oversees clinical training, implementation of evidenced-based clinical models and ensures measurement of clinical outcomes for clients.

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.

Angela Manns, BS, RN – Director of Medical Services
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, BA – Director of Finance
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 27 years. She is a long-term resident of Franklin County.

Chrissy Wedel – Director of Customer Experience
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 – Executive Assistant
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.

Board of Directors