Here for Families,
Through Every
Chapter of Life
For over 25 years we have walked alongside families, children, and adults, offering support, guidance, and understanding through every challenge life brings their way.
Let us walk with you now.
Caring support through
psychiatry, psychology, and
family counseling.
Marsh Landing Behavioral Group evolved from Dr. Mark Tomaski’s solo child psychiatry practice on Third Street South in Jacksonville Beach. Dr. Tomaski opened this practice in 1996 while practicing as the first child psychiatrist at Nemours Clinic and consulting for Wolfson’s Children’s Hospital Psychiatry Unit and Jacksonville’s community mental health care system.
With recognition that Northeast Florida offered only fragmented mental health care, he began developing a private group practice to provide comprehensive care to children and families. Marsh Landing Behavioral Group is now an established multidisciplinary practice integrating classic treatment concepts and the modern neurosciences.
Marsh Landing Behavioral Group Specialists provide adult psychiatry, child psychiatry, clinical psychology, and family counseling.
Featured Services
Meet Our Providers
Why Choose Us
Marsh Landing Behavioral Group is dedicated to providing compassionate, comprehensive mental health care for children, adults, and families. Our team of specialists in psychiatry, psychology, and counseling brings deep expertise and a commitment to individualized treatment. By blending classic therapeutic approaches with modern neuroscience, we ensure evidence-based, effective care. With flexible scheduling, convenient telehealth services, and a focus on family support, we make it easier to access the right care at the right time.
Telehealth & Patient Resources
Access care from anywhere, and find the forms you need in one place
