Centerstone’s Executive Leadership

Dr. C.J. Davis is Chief Executive Officer at Centerstone, the nation’s largest nonprofit behavioral health system. Davis is a nationally recognized leader in behavioral health and a foremost expert in building affiliations that expand access to life-saving and life-changing care. With more than 30 years of experience as both an executive and a clinical psychologist, Davis has dedicated his career to ensuring that individuals and families can reach the compassionate, comprehensive care they need—when and where they need it.

Prior to joining Centerstone, Davis served as President and CEO of Burrell Behavioral Health and later as CEO of Brightli, Inc., the parent company of Burrell, Preferred Family Healthcare, Southeast Missouri Behavioral Health, Comprehensive Mental Health Services, and other affiliates. Under his leadership, Brightli became one of the nation’s largest nonprofit behavioral health systems, employing more than 5,000 people across 200 locations in five states and generating nearly $600 million in annual revenue.

Widely regarded as a national leader in behavioral health affiliations, Davis has led or been instrumental in more than 10 major mergers and partnerships, uniting organizations around shared missions, cultures, and visions. His leadership philosophy centers on improving access, advancing the delivery of care, and driving innovation to meet the evolving needs of a rapidly changing healthcare landscape. From integrating behavioral health and primary care to scaling community-based programs, Davis has worked to design systems that break down barriers and deliver meaningful outcomes for those they serve.

His career spans nearly every level of behavioral healthcare including community treatment, residential programs, inpatient services, and criminal justice settings across Missouri, Pennsylvania, and Indiana. He currently serves on the boards of MHCA and his alma mater, Culver-Stockton College. Biz 417 Magazine named Davis one of its “10 for the Next 10,” and Springfield Business Journal honored him as both a Man of the Year (2019) and CEO of the Year (2021).

Davis earned his Bachelor of Science in Psychology, Master of Science in Clinical Counseling Psychology, and Doctorate in Clinical Psychology.

Through every affiliation, innovation, and partnership, he remains committed to one unifying purpose: building stronger systems that expand access, elevate care, and create healthier communities.

Jennifer Gagnon is the Chief Financial Officer at Centerstone, a nonprofit health system specializing in mental health and substance use disorder treatments. A seasoned financial executive with more than two decades of progressive leadership experience in accounting and finance, Gagnon works with Centerstone leadership to oversee financial strategy and define a clear financial roadmap for stability and growth.

Prior to joining Centerstone, Gagnon served as the Chief Financial Officer at Brightli and for Burrell Behavioral Health where she guided financial strategy and operations, while playing a key role in organizational growth and fiscal stewardship. Her career also includes a seven-year tenure as controller at Treadwell Enterprises, Inc., and earlier leadership as director of accounting at Burrell Behavioral Health.

A certified public accountant, Gagnon earned her bachelor of science in accounting from Missouri State University. Her expertise spans financial reporting, budgeting, compliance, risk management, and building high-performing finance teams that support mission-driven organizations.

David Guth is Centerstone’s Chief Executive Officer Emeritus, a nonprofit health system specializing in mental health and substance use disorder treatments. Guth has more than 40 years of health care leadership and has served as Centerstone’s Chief Executive Officer since 1991. Under his leadership, the organization has grown from $6M in revenues and 300 staff serving 2,000 individuals to revenues of $1.1 billion and over 10,000 staff serving more than 250,000 people each year. 

Guth has served on the Board of Directors for many notable organizations, including Triad Learning, the Executive Committee of the National Action Alliance for Suicide Prevention, and the Board of Visitors for the University of Tennessee’s College of Social Work. He is highly regarded in the industry and has received many recognitions, including the National Council Visionary Leadership award, Nashville Business Journal’s Health Care Power Leaders Award, and the Douglas Henry Award for Service to Children and Families at Risk from the University of Tennessee’s College of Social Work. Guth also works as an industry consultant, primarily in the area of affiliations, mergers, and acquisitions. The National Council for Behavioral Health published Guth’s book on mergers, “Strategic Unions: A Marriage Guide to Healthy Not-for-Profit Mergers.” 

Guth graduated from Vanderbilt University with a bachelor’s degree in mathematics and from the University of Tennessee with his master’s degree in social work administration and planning. 

Stacey Hudson is the Chief Human Resources Officer (CHRO) for Centerstone, the nation’s largest nonprofit behavioral health system. She provides strategic oversight and guidance across multiple human resources functions, including talent management, employee relations, benefits, payroll, compensation, leave management, and HRIS administration.

Before joining Centerstone, Hudson served as the CHRO for Brightli, where she provided executive leadership for HR strategy and operations across the organization. Prior to that, she held several leadership roles at Preferred Family Healthcare and also served as HR Director at Smithfield Foods. Hudson has built a track record of strengthening organizational effectiveness, enhancing employee engagement, and guiding HR teams through growth and transformation. She has been recognized for her ability to create collaborative HR teams and for her expertise in aligning workforce strategies with organizational goals. She is known as a trusted advisor on human resources, workforce development, and organizational design. In addition to her professional contributions, Hudson remains committed to mentoring future HR leaders and supporting initiatives that foster stronger workplaces and healthier communities.

Hudson is actively involved in her small community of La Plata, MO where she is actively involved in several community groups.

Hudson earned her Bachelor of Science in Business Administration from the University of Central Missouri. She also completed her Master of Business Administration at William Woods University. She holds the Senior Professional in Human Resources (SPHR) certification from the HR Certification Institute and the Senior Certified Professional (SHRM-SCP) credential from the Society for Human Resource Management.

Lisa Norton is the Chief of Staff at Centerstone, a nonprofit health system specializing in mental health and substance use disorder treatments. Norton partners with executive leadership to advance strategic priorities across the organization. In this role, she helps coordinate enterprise-wide initiatives, facilitates collaboration among departments, and ensures alignment between Centerstone’s strategic goals and operational execution. Previously, Lisa served as Centerstone’s Vice President of Enterprise Strategy, where she led efforts to develop and implement organizational strategies that drive growth and innovation across Centerstone’s multi-state footprint.

Lisa brings more than two decades of experience in healthcare administration, strategic planning, marketing, and operations. Before joining Centerstone, she held several leadership roles at Northside Hospital Gwinnett, including Director of Operations, where she oversaw the management of a 600-bed acute care facility and led large-scale construction and service expansion projects. She also previously served as Director of Business Development at The Physicians Spine & Rehabilitation Specialists and as Service Line Marketing Manager at Northside Hospital.

Lisa is active in her community as a member of Gwinnett Church in Sugar Hill, Georgia, and as a past sponsor and volunteer with Dreamweavers of Georgia.

Lisa earned a master’s degree in marketing from Georgia State University and a bachelor’s degree in sports medicine and athletic training, with a minor in speech communication, from Valdosta State University.

Johnel Reid is Chief Marketing & Strategy Officer for Centerstone, a nonprofit health system specializing in mental health and substance use disorder treatments. She leads strategy and oversight for the organization’s branding, communications, grant writing, national policy, and referral marketing.

Reid joined Centerstone as vice president of public affairs and marketing in 2018. Prior to that, she served with two Fortune 500 companies. At Community Health Systems, Reid was vice president for strategic planning and marketing, providing executive support to an operating division that included 38 hospitals and systems across several states. From 2003 to 2012, she was director of marketing and public relations at HCA Healthcare where she led development of market-based branding into a consumer health network.

Reid holds a bachelor of science degree in sociology and political science from Longwood University in Virginia.

Tyler Roebke is the Chief Legal Officer at Centerstone, a nonprofit health system specializing in mental health and substance use disorder treatments. As Chief Legal Officer, Roebke leads the administration and oversight of Centerstone’s corporate compliance program, which covers patient privacy and data security matters across the organization’s multi-state footprint.

Roebke has nearly 15 years of experience in the regulatory compliance profession and prior to joining Centerstone served as Compliance Officer and General Counsel for Easter Seals MORC, a nonprofit behavioral health provider in Michigan. There, he directed all aspects of the organization’s legal, risk, and compliance operations.

Roebke graduated from Michigan State University with a bachelor’s degree in humanities and from Wayne State University Law School with a Juris Doctor degree. He is certified in healthcare compliance by the Health Care Compliance Association and obtained a certificate in mergers & acquisitions from Harvard Business School’s Executive Education Program.

Dr. Garima Singh is the Chief Medical Officer at Centerstone, the nation’s largest nonprofit behavioral health system. Dr. Singh is a triple board–certified physician in Child and Adolescent Psychiatry, General Psychiatry, and Addiction Medicine and also serves as adjunct faculty in the Department of Psychiatry at the University of Missouri, participates as an expert panelist for the ECHO Child and Adolescent Psychiatry program, and is the president of the Missouri Psychiatry Physician Association.

Deeply passionate about evidence-based medicine, Dr. Singh is committed to integrating cutting-edge research and novel clinical innovations into everyday practice. Her work emphasizes the seamless integration of medical and behavioral health services, ensuring that care is both comprehensive and patient-centered.

Dr. Singh focuses on transformative healthcare delivery models, including telehealth and integrated, collaborative care systems, with a particular emphasis on improving access in rural and underserved communities.

Beyond her clinical and academic work, Dr. Singh is dedicated to empowering the next generation of leaders. She actively mentors young professionals, supports leadership development, and contributes to building platforms that foster training, growth, and innovation across the behavioral health and medical fields.

Dr. Singh grew up in India, earning her medical degree there before completing a fellowship in child psychiatry at Southern Illinois University (SIU) and her general psychiatry residency at the University of Missouri School of Medicine.

Tom Weber is the Chief Operating Officer of Centerstone, a nonprofit health system specializing in mental health and substance use disorder treatments. He guides Centerstone leaders in creating and executing strategic growth plans while maintaining operational financial sustainability.

With his background as a certified public accountant, Weber previously served as Chief Financial Officer for Preferred Family Healthcare and more recently as Chief Administrative Officer for Brightli, a behavioral health organization that builds healthy communities by providing seamless access to comprehensive, compassionate, and innovative care.
Prior to his career in healthcare, he worked at a public accounting firm for 10 years serving clients primarily in the banking industry and M&A space.

Weber has undergraduate and master’s degrees in accountancy from Missouri State University. He holds an active CPA license in Missouri and also has inactive licenses as a Certified Internal Auditor (CIA) and Series 7/66 for financial advisory services.