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Leadership Florida

Board of Directors

Timothy Knowles, Chair
Dr. Jennifer Bencie, Vice-Chair
Rev. James Golden, Secretary
Melissa Larkin-Skinner, CEO
Maritza Solis
Linda Agresta
Nina Marshall
Robert L.Smith
Colleen Thayer
Edward Viltz

Centerstone Florida Leadership

Melissa Larkin-Skinner, MA, LMHC - Chief Executive Officer

Melissa Larkin-Skinner is the Chief Executive Officer at Centerstone Florida. She is responsible for clinical and fiscal oversight of clinical operations. As a Licensed Mental Health Counselor, she has nearly 25 years of experience in mental health and addictions treatment programs including hospital, outpatient, crisis, community based, forensic and child welfare services. Larkin-Skinner has designed and operated innovative programs to meet community needs such as the Community Action Teams adopted as a statewide model. In August 2016, she received the Florida Alcohol and Drug Abuse Association Administrator of the Year for her work in combating the opioid epidemic in our community.

Roger Johnson - Chief Administrative Officer

Roger Johnson has lived in Bradenton, Fla. for over 45 years, and has been employed by Centerstone since 1994. During that time Johnson has worked in many areas of Centerstone, as a Mental Health Technician, Unit Clerk, Accounts Receivable Manager and Managed Care Contracts Manager.

Johnson has a BS in Business. He continues to work on new business projects to extend our services to other areas of our community.

Shawny Robey - Chief Operating Officer

Shawny Robey earned full athletic scholarships to The University of Southern Mississippi to complete her undergraduate and graduate work. She graduated with a Bachelor’s degree in Business with a concentration in Marketing and a Master’s degree in Communications. She began her career in Manatee County at the largest Federally Qualified Health Center (FQHC) in the Southeast region. She was responsible for marketing, public relations, philanthropy and media functions. After many years with the organization, she joined Eli Lilly and Company as a pharmaceutical representative in the neuroscience division. There she focused on meeting the pharma needs for healthcare providers treating patients having mental health concerns or physical pain as a result of fibromyalgia and diabetic neuropathic pain. This experience was the springboard into the behavioral health field.

Robey joined Centerstone in 2013. She oversees outpatient and inpatient services and lead business development and marketing. She is currently finishing her Master’s of Business Administration with a concentration on International Business at Florida International University.

Mihaela Zdrali, PsyD – Vice President for Outpatient Services

Dr. Mihaela Zdrali is the Vice President for Outpatient Services and a Fellow of the Centerstone Research Institute overseeing a number of programs: Florida Assertive Community Treatment, Children Assertive Treatment, Forensic Services and Resource and Recovery Services. She joined Centerstone in June 2017 following her move from England where she earned a Bachelor of Science and a Doctorate in Psychology from the University of Roehampton, and where she later served as a lecturer on psychology postgraduate programs. She is a member of American Psychological Association (APA), American Society of Addiction Medicine (ASAM) and earned her Associate Fellowship with the British Psychological Society (BPS) before moving to Florida.

Before joining Centerstone, Zdrali worked with one of the leading National Health Service Trusts in England as the Lead Counseling Psychologist and Deputy Operations Lead. Her extensive experience spans across clinical and managerial roles, leading and working with multi-disciplinary teams in an integrated health care model. Over the last 10 years, she has specialized in addictions and trauma-informed approaches to care, working as a consultant, clinical supervisor and in private practice.

Zdrali speaks 7 languages and her hobbies are yoga, Pilates and studio dance classes. She personally practices and encourage mindfulness practice for client groups and existing staff members as part of corporate wellbeing program. She has also been involved for many years as a volunteer Olympic level judge for gymnastics. 

Michelle Abercrombie, Director of Facility Management

Michelle Abercrombie, Director of Facility Management for Centerstone Florida. She directly oversees the maintenance, housekeeping, dietary, and transportation departments, and as a Director is also responsible for the entire Physical Plant operation, as well as all of Centerstone’s outpatient facilities. Her priorities are maintaining a safe, secure and healing environment for clients and staff, as well as keeping Centerstone audit ready for all agencies. 

Abercrombie also serves as the Safety Officer, and Chairperson of the Environment of Care Committee, dedicated to identifying and resolving safety issues for staff and clients, conducting internal drills, She also represents Centerstone on the ESF8, Manatee County Emergency Operations Center, and Organizations Active in Disaster. Abercrombie has studied at Manatee Community College, Texas A&M Engineering, The Department of Homeland Security, and FEMA, and has been certified with Emergency Management Institute, completing ICS 100 for health care and hospitals.

Abercrombie grew up in Manatee County, working in the community for over 25 years with Volunteers of America, Owner/Operator of Abercrombie Painting LLC., as well as her family’s business’s which included landscape architect and design.

Marilyn Agee RN, BSN – Director of Nursing

Marilyn Agee is Director of Nursing for Centerstone Florida. In her career of 28 years in Mental Health and Addictions nursing, she has worked as Charge Nurse, Nurse Manager and as Assistant Director of Nursing to Director of Nursing since 2002. She is responsible for monitoring and educating all inpatient and outpatient nurses in following Standards of Nursing Care and Practice as well as overseeing all Behavioral Health Technicians who provide direct patient care. Agee coordinates clinical oversight with three Schools of Nursing providing students the opportunity to experience patient care in the Mental Health and Addiction field.

Agee received the 2016 Clinical Excellence Heroes Award for a corrective-action free CMS licensing review. Agee graduated  in 1989  from Millikin University  with a Bachelor of Science in Nursing  

Robert Boxley PhD – Director of Clinical Education 

Bob Boxley is the Director of Clinical Education for Centerstone Florida’s Psychiatry Residency and Doctoral Psychology programs. He has been involved with the training of the next generation of doctors since 2001; nearly 200 doctors have received training under Bob since that time.

Boxley has a PhD in Clinical Psychology and has been licensed as a psychologist for 20 years. During that time, he has worked with adults, children and adolescents in a variety of behavioral health areas. Prior to becoming a psychologist, he worked as a therapist in hospital and clinic settings for 17 years, working predominantly with children, adolescents and young adults. Boxley has a number of professional and research interests, including trauma, co-occurring disorders, positive psychology, childhood disorders.

Sean Gingras - Director of Finance

Sean Gingras, Director of Finance for Centerstone Florida. After college, Gingras began as an Audit Intern for a Big Five accounting firm and within three years became an Audit Supervisor at a local firm. In 2007 he became a Certified Public Accountant (CPA). Gingras joined Centerstone as the Director of Finance in early 2010.

Gingras is a current member of the American Institute of CPAs, Florida Institute of CPAs, the Government Finance Officers Association, the Florida Government Finance Officers Association, Healthcare Financial Management Association and the Manatee Young Professionals. He is also a current Finance Committee member for the Humane Society of Manatee County, Finance Committee member for the Central Florida Behavioral Health Network and a Board member of the Pinnacle Plaza Condo Association.

He studied accounting at both the University of Florida, where he received a Bachelor’s Degree in Accounting and at the University of Central Florida, where he received his Master’s Degree in Accounting.

Ranjay Halder, MD - Medical Director

Ranjan Halder is the Medical Director for Centerstone Florida. He attended Spartan Health Sciences University and completed his residency at East Tennessee State University (Chief Resident).

Halder holds a fellowship with Palmetto Health/University of South Carolina School of Medicine and his academic appointments include Adjunct Clinical Assistant Professor, Lake Erie College of Osteopathic Medicine. Halder is a member of the American Academy of Child and Adolescent Psychiatry, and the American Society of Addiction Medicine.

Samantha Kolb, LCSW – Director of Addiction Center

Samantha Kolb is the Director of Addiction Center at Centerstone Florida. She graduated from Florida State University with both a Bachelors and Master’s degree in Social Work.

Kolb is a Licensed Clinical Social Worker with nearly 10 years’ experience in behavioral health. She specializes in addictions treatment and currently manages the Adult Addiction Continuum that includes Inpatient, Residential, Outpatient, Medication Assisted Treatment, HIV and Community Based Family Programs.

Colleen A. O’Connor, SPRH, SHRM-SCP – Director of Human Resources

Colleen O’Connor is the Director of Human Resources at Centerstone Florida. She holds a Bachelor’s degree from Ohio University. She is certified as a Senior Professional in Human Resources by the Human Resources Certification Institute and as a Senior Certified Professional by the Society for Human Resources Management. She has over 10 years of experience in Human Resources.

Prior to specializing in Human Resources, O’Connor had over 20 years of experience operating residential, day and vocational programs for adults who have developmental disabilities and behavioral health needs.

Jane Roseboro, MA, MCAP - Director of Forensic Services

Jane Roseboro is the Director of Forensic Services at Centerstone. She has been with Centerstone since 2009 and has been working to help those with mental health and substance abuse issues for more than 17 years. Roseboro started with Centerstone as a counselor in the Children’s Substance Abuse and Mental Health Program. After less than a year, she was promoted to Supervisor over Children Substance Abuse Program to include outpatient counseling and prevention services. Later, Roseboro began managing other community based programs such as the Manatee County Drug Court Program. Due to the excellent care that Centerstone staff provide, Centerstone continued to grow and as a result she began managing Centerstone Drug Courts in Sarasota County as well.

Currently, Roseboro is responsible for the oversight of the mental health services for Armor, which serves inmates at the Manatee and Sarasota County Jails and she oversees the Treatment Court Programs in both counties as well. 

Linda K. Transue, CPHQ, LHRM, RHIT – Performance Improvement/Risk Management Director

Linda Transue is the Performance Improvement/Risk Management Director at Centerstone Florida. She is a Certified Professional in Health Care Quality, a Licensed Health Care Risk Manager and a Registered Health Information Technician. Transue has over 20 years of experience in Performance Improvement and has been Centerstone’s Corporate Risk Manager since March 2006. She has also been Centerstone’s Joint Commission Coordinator since 1999.

Charles Whitfield, MEd, CLC - Director of Community Care

Charles Whitfield, MEd, is a Certified Life Coach and the Director of Community Care with Centerstone Florida.

He graduated with a Bachelor’s degree in Business Administration and a Master’s degree in Elementary Education from Temple University in Philadelphia.

Whitfield has been working for Centerstone since 2008, managing multiple programs including the Walk in Center, Homeless Outreach, Family Safety Intervention Program, Children’s Substance Abuse Prevention and Intervention Teams, Community Paramedicine Program and the Employee Assistance Program (EAP).

Mary Winters – Director of Client Records

Mary Winters is the Director of Client Records at Centerstone Florida. She has over 25 years of experience working in the field of Health Information. Winters oversees the Records Department and Front Desk/Customer Service.

Maritza Solis - Executive Assistant

Maritza Solis is the Executive Assistant to the CEO, the VP of Business Development and the Board of Directors at Centerstone of Florida. She is passionate about her job and believes in helping others and giving back to the community. Solis has been with Centerstone for 3 years, and previously held a position as an Executive Assistant to the CEO and Directors at a Behavioral Health company in California. She has served in a number of administrative positions throughout 10 years.