Trauma and PTSD therapists & psychiatrists in Slidell, LA

My name is Shanna McMullen, and I am a Psychiatric Mental Health Nurse Practitioner with a Master of Science in Nursing from Northwestern State University of Louisiana. I work with adults and seniors, and I bring a broad, inclusive, and genuinely creative approach to mental health care.

My clinical areas span anxiety, depression, bipolar disorder, PTSD, OCD, ADD/ADHD, panic disorders, chronic conditions, sleep disorders, stress, relationships, and family concerns. I offer dedicated support for maternal mental health — including prenatal and postpartum experiences — and I am deeply committed to affirming, knowledgeable care for LGBTQ+ individuals, including those navigating gay, lesbian, bisexual, and transgender experiences, as well as men's and women's mental health needs.

One thing that sets my practice apart: I incorporate Art Therapy as one of my therapeutic approaches — using creative expression as a powerful pathway to insight, healing, and self-discovery for clients who connect with that kind of work.

Whatever brings you here, you will be met with openness, care, and the full breadth of what I have to offer.

Looking for someone who will truly listen? I believe everyone needs support, and I strive to be that steady presence in therapy. Clients often describe me as warm, open-minded, and easy to talk to. My goal is to create a space where you feel heard, respected, and comfortable being yourself.

I am a Licensed Professional Counselor with over 20 years experience in mental and behavioral health. I have worked with all ages from 0-65+, and am certified in a variety of evidence-based practices that aid individuals and families in reaching their goals. These include, but are not limited to CBT, Multisystemic Therapy, Child Parent Psychotherapy, Positive Parenting Program, and many others. I am also in pursuit of my doctoral degree with a focus on counseling psychology.

I bring to my work both professional ( LCSW/ Social Work) training and decades of lived experience. As a first generation American who grew up on the Louisiana bayous, I have traveled widely through Europe, India and many other parts of the world immersing myself in diverse cultures, faiths, and perspectives. I am well versed in the arena of substance abuse and recovery work. I have supported people through the dying process, grief and loss; and, have helped many walk through their fears, their sense of hopelessness, despair and lack of purpose. I approach anxiety and depression holistically by focusing on the mind/ body/ spirit connection. My own journey has taught me that healing is always possible and that we are all WORKS IN PROGRESS.

With over 20 years of experience in the mental health field, I am deeply committed to helping individuals and families heal, grow, and reconnect with their strengths. My work is grounded in trauma-centered therapy, recognizing that many emotional and behavioral challenges are rooted in experiences that deserve compassion, understanding, and skilled support.

Throughout my career, I have worked extensively with children, adolescents, and families, helping them navigate life transitions, relationship challenges, and the impact of trauma. I believe therapy should be a safe space where clients feel heard, valued, and empowered to move forward with confidence.

I’m a client-centered therapist with more than 14 years of experience working as a mental health provider, addictions counselor, and group therapy facilitator. I work with adults and older teens who may be struggling with anxiety, depression, stress, relationship challenges, substance use, recovery, or major life transitions.

I understand that reaching out for therapy can feel uncomfortable or overwhelming, especially when life already feels heavy. My goal is to create a space where you feel heard, respected, and supported without judgment. I believe therapy works best when there is a genuine connection, and I strive to build that connection through honesty, compassion, and trust.

I’m passionate about helping people better understand themselves, develop healthier coping skills, and move toward lasting emotional wellness. Whether you are facing a difficult season, feeling stuck, or simply looking for support and guidance, I’m committed to helping you navigate those challenges with greater clarity and confidence.

Reaching out for support can be a big step, and you don’t have to navigate life’s challenges alone. I believe therapy works best when we approach it as a collaboration. Your story is unique, and you are the expert in your own life.

I work with adolescents and adults who may be feeling overwhelmed by things like trauma, anxiety, stress, ADHD, or difficult life experiences. Together, we create a space where you can talk openly, feel heard, and begin exploring what healing and growth look like for you.

Clients often describe me as inquisitive, warm, and even a bit humorous, someone who helps them look at challenges from new perspectives while staying focused on solutions.

When life gets hard, it may be easy to feel like an empty shell of yourself, often waiting for hope amid the weight of anxiety, depression, stress, & trauma making it an even heavier burden to manage the demands of daily life. Guided by the principles of community, commitment, and autonomy, my mission is to equip individuals with the tools needed to navigate their distinct life journeys, overcome challenges, and pursue their aspirations. I am dedicated to establishing a secure, nonjudgmental, & accepting environment where you are encouraged to embark on a journey of authentic self-discovery, skill enhancement, and individual growth.

I am Shannon Robertson, a board-certified Psychiatric Mental Health Nurse Practitioner and the founder of Mosaic Minds Wellness & Consulting. I believe mental health care should feel human, not rushed or impersonal. I strive to create a judgment-free space where you feel safe, respected, and truly heard. I take time to understand your story, not just your symptoms, and I approach care with compassion, curiosity, and empathy. My goal is for you to feel supported, empowered, and never alone in your healing journey.

Signed consents, questionnaire and telehealth forms are collected via the Headway and Mosaic Minds EHR portal and are required before the visit.

Online Booking: https://mosaicminds.intakeq.com/booking

I have been practicing since May 2012 and am one of only eight certified Dialectical Behavior Therapy (DBT) specialists in the state of Louisiana. I received my training at a VA hospital, where I worked extensively with veterans, gaining deep experience in trauma-informed care.

Over the course of my career, I have worked across all levels of care, which uniquely equips me to support clients in crisis and navigate difficult, emotionally intense situations during sessions. I am also a certified trauma specialist, and I firmly believe that recovery and renewed hope are possible for every client I serve.

If anxiety, depression, ADHD, relationship stress, or the challenges of living with a health disability have been weighing on you, you do not have to sort through it alone. Therapy can be a space to feel understood, gain clarity, and move forward with more confidence. I work to create a warm, respectful environment where you can be yourself, feel heard, and build on your strengths. Together, we can work toward meaningful change in a way that feels supportive, personalized, and realistic for your life.

As a Board-Certified Psychologist, I specialize in providing therapy services to children, adolescents, parents, and families. Using evidence-based treatment (i.e. CBT) as the foundation, I tailor treatment to each individual or family.

• Doctoral degree (Ph.D.) in Clinical Psychology at Kent State University
• Clinical residency at Tulane University School of Medicine in New Orleans, Louisiana
• Licensed clinical psychologist in the states of Ohio and Louisiana
• Over 12 years of experience working in schools, inpatient treatment settings, and hospitals
• Associate Professor at Case Western Reserve University School of Medicine