Geoffrey E. Buck, Psy.D. CEO
Dr. Buck has extensive experience in developing, implementing and managing large-scale behavioral health coverage benefits, including Medicaid, Medicare, and private health insurance, and has been the implementation leader for all aspects of numerous public and private programs. Dr. Buck also has experience with EAP work and unique or customized programming for specialized populations. He’s experienced with accreditation processes including URAC and NCQA. Geoff is a licensed clinical psychologist with over twenty-five years of experience including practice in a variety of settings.
Charles Coats, MD, Medical Director
Dr. Coats joined the InteCare staff as Medical Director in 2001, and also serves as a Associate Medical Director at Adult & Child Center. Dr. Coats has over twenty years of practice experience. He received his M.D. from the Indiana University School of Medicine, and is Board Certified in both Psychiatry and Child and Adolescent Psychiatry.
Rebecca Sigafus, MSW, Chief Operating Officer and Director of Quality Improvement
Becca Sigafus has more than 20 years experience in behavioral health and managed care with 10 years dedicated to the coordination and oversight of quality improvement programs. She joined InteCare, Inc. in 2000 as the Director of Quality Improvement and was responsible for the development and implementation of the InteCare Quality Improvement Program. Becca continues to manage all facets of the Quality Improvement Program including program direction, organizational policy and procedure along with the initiating performance improvement projects for InteCare and its credentialed provider network. Becca has broad behavioral health experience which includes the provision of direct service within the Community Mental Health System and as a Quality Improvement Manager for a large, national managed behavioral healthcare company. Becca has an extensive background in behavioral health accreditation including URAC, NCQA, The Joint Commission and CARF. She earned her Masters of Social Work Degree from Indiana University.
Venita J. Moore, CPA, MBA, Chief Financial Officer
Venita is a versatile management professional with more than 20 years of experience in the public, private, and not-for-profit sectors. Venita has provided fiscal management and/or accounting services to small businesses, not-for-profits, and schools and formerly served as the Interim and Deputy Secretary for the Indiana Family and Social Service Administration and Chief for the Division of Planning and Special Programs at the Internal Revenue Service. She joined InteCare as CFO in 2005.
Julie Maxwell-Coker, MSW, LSW, Credentialing Manager
Julie Maxwell-Coker joined the InteCare staff in 2003. Prior to joining InteCare she worked in the claims department for a property casualty insurance company for four and half years. Julie graduated from Indiana State University with a Bachelor of Science in Sociology. She also graduated from Indiana University, Indianapolis in 2006 with a Master of Social Work and is a Licensed Social Worker in the State of Indiana.
NaKaisha Tolbert-Banks, MSW, Program Manager
NaKaisha Tolbert-Banks serves as the Program Manager for the Neighborhood Based Mental Health Services Program. NaKaisha has designed and implemented several programs related to mental health, which educate and serve minorities within the Indianapolis community. She received her Master of Social Work degree from Indiana University and has over 10 years of experience in the Social Services and Behavioral Health arena. She has most enjoyed her work in Child Welfare and further work in the Behavioral Health field, in which she worked as a Psychotherapist. Additionally, she has experience in and has enjoyed working with at-risk youth suffering from addictions issues, mental illness and homelessness.
Carol Gorbett, BS, Credentialing Specialist
Carol joined the InteCare staff in 2009 with over four years of experience with Mental Health Provider Credentialing and nine years experience working in Managed Care Organizations. Carol earned her Bachelor’s of Science degree from Indiana Wesleyan University.

Jill Derryberry, BA, MHFRP Manager
Jill Derryberry joined InteCare in 2005 and serves as MHFRP Manager. She oversees the Mental Health Funds Recovery Program (MHFRP). Prior to joining InteCare, Jill worked in the Financial Aid Industry for 5 years. Jill earned a Bachelor of Arts degree in Psychology from Indiana University South Bend.
Stacy Veach, LCSW, Clinical Director
Stacy has extensive clinical practice and managed care experience, having practiced in private practice, and institutional outpatient settings (including CMHCs). She also has worked in management positions for two national Managed Behavioral Health Organizations as well as one of the nations largest insurers. Stacy earned her MSW from Indiana University. After coming to InteCare in 2009, she works closely with our Network Providers and managed care partners in network management and troubleshooting, and in clinical service development.
Nicole Russell, MAC Program Specialist
Nikki works with the Mental Health Recovery Program (MHFRP) coordinating the time study process along with handling many office management duties. Nikki came to InteCare in 2011 with over 10 years in professional office management experience in the technology and education industry. Nikki earned an Associate of Science degree in Paralegal Studies from Vincennes University.

Lara Williams, BA, Quality Improvement Specialist
Lara joined the InteCare staff in 2010. Lara has 14 years of experience in Community Behavioral Health with 10 of that in Quality Improvement for a Community Health Provider in Massachusetts. Lara graduated from the University of Rhode Island with a Bachelor of Arts in Psychology.

Shirley Roll, BS, Provider Data Management Representative
Shirley is responsible for customer service to InteCare Providers regarding the InteCare BHOLT database as well as the State of Indiana Web Interchange and Health Plans. She also maintains the InteCare BHOLT Database by entering data and performing quality control. Shirley has extensive experience with customer service, computer systems and databases, and with assisting providers in analyzing and resolving their claims issues, most recently with HP for the State of Indiana. Shirley joined the InteCare team in 2011.
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