Terri White

Terri L. White, MSW, Chief Executive Officer joined Mental Health Association Oklahoma as Chief Executive Officer in August 2020. Under her direction, the Association continues to expand the reach of its innovative programs and services designed to serve Oklahomans and their loved ones, affected by mental illness, homelessness, substance use and justice involvement.

White is the former commissioner for the Oklahoma Department of Mental Health and Substance Abuse Services (ODMHSAS). She served as commissioner from May 2007 to February 2020.

Through her leadership, ODMHSAS became nationally known for children’s behavioral health services, community-based treatment programs for adults, technological innovations such as “telepsychiatry,” and the integration of behavioral health care into primary healthcare settings.

Mark Davis
Mark Davis began his social work career in 1996 working as a Rehabilitative Specialist at an area psychiatric community mental health center where he provided supportive counseling and group rehab to individuals entering an in-patient setting. After receiving his master’s degree in social work from the University of Oklahoma in 2005, he continued his unyielding promotion of hope and recovery for people impacted by mental illness, homelessness, trauma, debilitating poverty and those facing challenges as a result of involvement with the criminal justice system. Ultimately, his drive to assist at-risk populations along with a more global goal of improving the social service system(s) across the community led to his current position as Chief Programs Officer for Mental Health Association Oklahoma.
Mark A. Davis, LCSW, Chief Programs Officer
Jessica Phillips
Jessica is a certified public accountant and has spent over a decade working in the accounting field. She has been with the Association since 2017 as both assistant controller and controller. Previously, Jessica worked in public accounting as an auditor with a regional firm. Jessica received a Bachelor of Business Administration in Accounting (cum laude) from Northeastern State University, obtained her CPA license through the Oklahoma Accountancy Board and is a member of the Oklahoma Society of CPAs well as the American Institute of CPAs. She is responsible for accounting, finance, audit and grant management.
Jessica Phillips, CPA, Chief Financial Officer
Julie Ward joined Mental Health Association in 2023 as Chief Financial Officer. No stranger to the role, Julie has served in that capacity before within the healthcare industry. She has vast leadership experience in financial management and sustainability with a keen eye on reducing expenses. Julie has a background that includes the ability to streamline business processes and increase operational efficiency. Her experience includes strategic planning and she takes pride in her ability to distill complex problems into business transformation. Julie earned her Bachelor’s degree in business administration from Northeastern State University in Tahlequah.
Julie Ward, CPA, Chief Financial Officer
John Manning
John Manning joined Mental Health Association Oklahoma in 2023 after serving more than 30 years in various corporate leadership and consulting roles, striving to develop and apply productive work environment strategies. After so many years in the corporate world, John was searching for more impactful work. He found his home at MHAOK as Chief Operations Officer. John has worked with executive, administrative and operational teams to help build effective business strategies. With his background in human resources and accounting, John brings a wealth of knowledge and experience to his role. John, a CPA, earned his Bachelor’s degree in Accounting and Finance from Northeastern University and a Master’s in Business Administration from Phillips University.
John Manning, CPA, Chief Operations Officer

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