Executive Leadership

The Board of Managers is comprised of the four (4) managing members of the company who are, collectively, the company's Executive Leadership.

Zachary C. Talbott


Zachary Charles Talbott (Zac) is a Maryville, TN native, graduate of Maryville High School and the University of Tennessee at Knoxville, Tennessee Licensed Alcohol & Drug Abuse Counselor (LADAC), Tennessee Qualified Clinical Supervisor (QCS), a Tennessee licensed social worker (LMSW), and a nationally recognized expert in comprehensive opioid use disorder (OUD) treatment. 

Zac founded, opened, and operated outpatient opioid treatment programs in Georgia and North Carolina starting in 2015. 

Zac is the 2019 recipient of the Richard Lane & Robert Holden MAT Advocacy Award from the American Association for the Treatment of Opioid Dependence (AATOD), a prestigious national award given to one individual in the United States every 18 months for exemplary achievements in MAT advocacy and influencing related policy, and the 2021 recipient of the Lisa Mojer-Torres Award from Faces & Voices of Recovery

Leslie Talbott Tummel

Executive Vice President

Native to Maryville, TN, Leslie Talbott Tummel (Leslie) went on to obtain her Bachelor of Arts in Psychology from Maryville College in 2003, and her Doctorate degree in Physical Therapy (DPT) from Belmont University in Nashville in 2006. 

She completed an advanced certification course in Vestibular Rehabilitation at Emory University in 2007, and has enjoyed working with patients in this capacity in multiple clinical settings over the last 14 years. More recently, she has completed courses to learn how holistic and non-traditional interventions can be beneficial in the healing process.

Leslie's life has been personally touched by the opioid crisis as she has experienced the devastating loss of family members to overdose deaths. She has also experienced great joy in witnessing other friends and family live a life of victory through recovery. Because of both experiences, Leslie feels an incredible amount of gratitude to bear witness to the recovery process and the success it can bring to individuals, families and communities. Leslie looks forward to bringing her physical therapy background and holistic health perspective to Talbott Legacy Centers in partnership with top experts in the field of comprehensive opioid use disorder treatment.

Alan J. ("Chip") Fuller

Vice President of Operations & Finance

A Maryville native, Alan Joseph Fuller (Chip) came to the field of opioid use disorder treatment in 2015 to help establish a comprehensive opioid treatment program (OTP) in Chatsworth, Georgia after more than 23 years as an educator and administrator in the Maryville City and Blount County, Tennessee school systems. Chip has a Bachelors and Masters degree from the University of Tennessee at Knoxville, and he holds an Education Specialist (EdS) in Administration and Supervision from Lincoln Memorial University. 

Chip was first bonded with the Blount County Sheriff’s Office more than 20 years ago, and he has served as a reserve deputy and/or chaplain with the Blount County Sheriff’s Office during that time.

Although initially focused on security and administration issues with the Chatsworth, GA opioid treatment program, Chip quickly became passionate about seeing individuals find recovery from opioid use disorder. He subsequently sought education and clinical supervision and became credentialed as an alcohol & drug (A&D) counselor. 

Chip served on the Executive Committee of the Opioid Treatment Providers of Georgia (OTPG)’s Board of Directors during his time in Georgia, and Chip is a National Recovery Month Planning Partner.

Joshua G. Tummel

Vice President of Corporate Development

Joshua Grant Tummel (Josh) is a native to Knoxville, TN, and met his wife, Leslie Talbott Tummel, at Maryville College. Currently, he is a commercial account executive with Third Door Insurance, and is member of the board of managers for Patricia Hall Talbott Legacy Centers. He too has been personally affected by the opioid crisis, and has immense gratitude to be able to share in the recovery journey of several friends and family members. He looks forward to bringing his business expertise to our board of managers.

Program Leadership

Each nonresidential opioid treatment program (OTP) owned and/or operated by Talbott Legacy Centers (TLC) is led by three site directors who work collaboratively to ensure quality care is delivered efficiently and orderly. These three directors are, collectively, the Program Leadership of their respective facilities. 

Program Director

The Program Director is the primary administrator of the program and is responsible for overseeing all aspects of the program's operations in accordance with applicable state and federal regulations, accreditation standards of CARF International, and the company's policies and procedures.

The Program Director has operational and administrative oversight of the Medical and Clinical Directors and is responsible for continuously ensuring the collective staff, the multidisciplinary team, operates according to company policies and procedures, thereby ensuring ongoing quality and compliance in service delivery.

Medical Director

The Medical Director is an individual who is licensed by his or her respective state as a Medical Doctor (M.D.) or Doctor of Osteopathy (D.O.) and is Board Certified or Board-eligible in Addiction Medicine or Addiction Psychiatry. 

The Medical Director is responsible for ensuring all biomedical services are delivered in individualized ways that ensure compliance with applicable state and/or federal regulations, accreditation standards, and are delivered in ways that afford a high quality of care.

The Medical Director supervises the program's Medical Providers, Nurses (directly or through a Nursing Supervisor), Medical Assistants, and Laboratory Technicians. 

Clinical Director

The Clinical Director is an individual who holds an independent licensure or certification in a behavioral health field (i.e., alcohol & drug counseling, clinical social work, professional counseling, marital and family therapy, etc.) and is responsible for ensuring all behavioral health and other psychosocial support services are grounded in the collective evidence base and delivered in ways that ensure the highest quality of care.  The Clinical Director is responsible for the ongoing clinical supervision of counselors and therapists directly and/or through contract with another qualified clinical supervisor.

The Clinical Director has direct oversight of the program's counselors, therapists, and peer recovery specialists.