

Find mental healthcare support in Casselberry with UnitedHealthcare coverage through Headway. Access over 4,665 licensed providers offering virtual and in-person sessions, with copays as low as $0-$30. Start your free consultation today.
A Florida and Polk County native, Mirtha is a graduate of Frostproof High School. She is board certified as both a Psychiatric Mental Health Nurse Practitioner and an Autonomous Primary Care Nurse Practitioner. She earned a Bachelor's of Nursing from Polk State and a Master's of Nursing from USF. In 2023 Mirtha earned a Post Master's Certification in Psychiatry from Florida Atlantic University. However, her journey as a mental health provider began in 2020 when she became certified through the Academy of Christian Counseling, as a mental health coach. Then in January of 2025 she became an active member of the Order of Saint Luke (OSL) a healing ministry.
Mirtha has nearly 20 years of experience in healthcare. Her passion is caring for individuals struggling with mental health issues. She has been volunteering with the youth in her community for over 7 years and also has experience working in a domestic violence shelter with victims of trauma.
I believe that people have the strength and the resources they need to live the life they want, but sometimes they need guidance and support along the way. I work with clients with diverse socioeconomic, ethnic, religious and sexual orientation backgrounds.
The majority of my 17 years of social work experience has been working with clients who are struggling with depression, anxiety, stress management and relationship challenges.
I am committed to providing a safe and supportive environment for individuals, couples and families who are struggling find a greater sense of peace and joy in life's complex journey. My practice style is goal orientated. The initial visit will consist of information gathering and determining together achievable goals. Evening appointments are available.
Margaret Deuerlein, LMHC, is an experienced and skilled Licensed Psychotherapist. She specializes in Trauma, Anxiety and Panic Disorders, Social Anxiety, Stress, Depression, Mood Dysregulation, Low Self-esteem, Grief, Narcissistic, Borderline, Avoidant Personality, Co-dependency, Interpersonal Relationships, Communication, and Couple’s Therapy. She is EMDR-Certified and trained in Shema Therapy, CBT, DBT, Mindfulness, EFT, and the Gottman Method, among others. Healing, coping, achieving your life goals, and taking more control of your life are her focus. She offers in-person and virtual sessions. Bilingual services are available.



Headway makes it easy to get affordable in-network mental health care with United Healthcare — from finding the right therapist or psychiatrist, to understanding costs, to booking your first session.