About Us

At Onyx Behavioral Health, our team of board-certified psychiatrists, registered nurses, and licensed therapists works together to create a safe and supportive environment for your healing journey. 

We believe in a holistic approach that addresses your mind, body, and soul through personalized treatment plans and various therapies, all within our cozy, curated recovery facility designed for your comfort and well-being.

History of Onyx in Port St Lucie 

Since opening our doors in November 2023, Onyx Behavioral Health has been committed to providing exceptional residential behavioral health treatment services in Port St Lucie, Florida. In our short time, we’ve assembled a team of dedicated and experienced professionals passionate about helping individuals achieve lasting recovery.

Onyx is licensed by the Florida Agency for Health Care Administration (AHCA), ensuring we meet the state’s rigorous standards for quality care. Our commitment to excellence extends beyond our staff and facilities.

An image of the front signage of Onyx, a mental health treatment facility in Florida. Pictured is the front of the building as the sun is setting behind.
Tour Our Facility

Why Choose Onyx

  • Tailored treatment
  • Compassionate and experienced staff
  • Evidence-based practices
  • Affordable payment options
  • Calm & supportive environment
  • Holistic approach
  • Luxurious amenities

Taking the first step towards better mental health can feel overwhelming, at Onyx Behavioral Health, we understand that. Whether it’s for yourself or a loved one, our compassionate admissions counselors will be your guide every step of the way.

We offer flexible options – call us 24/7 or fill out our contact form if you prefer. At Onyx, we believe in unity, service, and achieving lasting recovery.

Mental health is unique to each person. We don’t offer a one-size-fits-all approach. That’s why we utilize a variety of evidence-based practices, tailoring them to fit your individual needs.

We also understand financial concerns. We offer affordable payment options and accept most major insurance plans to make your journey to wellness as smooth as possible.

Onyx, A Stone of Strength and Protection

The meaning behind the name of our facility reflects our core mission: to empower individuals with inner strength. Much like the onyx stone, our goal through treatment is to create strength from within to take on all of life’s daily challenges.

Our facility provides a safe space for healing and emotional safety. Like the onyx stone, believed to release negativity and promote growth, our treatment empowers you to shed burdens and embrace personal development.

Meet Our Team

Discover Healing with Onyx Behavioral Health

At Onyx Behavioral Health, we work to empower our residents to become productive citizens and stable individuals in their respective environments. We hope to guide and ground you in repairing your mind, body, and soul.

Begin Healing

Read Our Client Success Stories

Onyx surpassed all expectations. The team here radiates warmth and professionalism, creating a safe space where I felt truly heard and understood. The therapists are skilled and empathetic, providing personalized care that fosters real progress. The holistic approach to mental health here is refreshing and effective. From the serene environment to the comprehensive support, Onyx Behavior Health sets the gold standard. I can't recommend them highly enough for anyone seeking compassionate, top-notch mental health care.

-Georgi R.

I loved Onyx to treat my childhood trauma. All the staff were amazing. My personal therapist, Christy M, helped me tremendously with my trauma and is the best therapist I have ever had! I will miss the conversations and the delicious meals made by Chef Ryan. Ryan Sanderson and Elizabeth Hatfield assisted me greatly during my treatment and were a huge reason I was able to stay my entire treatment at Onyx! I truly miss everyone at Onyx! Thank you Onyx for assisting me with everything.
-Justin P.
My experience at Onyx Behavior Health in Port St. Lucie, FL was nothing short of exceptional. From the moment I walked in, I felt welcomed and supported by the compassionate staff. The environment is calming and conducive to healing, making each session a step forward in my journey towards better mental health. The therapists are highly skilled and attentive, tailoring their approach to suit individual needs. Their commitment to holistic well-being truly sets them apart. I'm grateful for the positive impact Onyx Behavior Health has had on my life and would highly recommend their services to anyone seeking genuine care and support

-Olivun P.

I have had a phenomenal experience an Onyx. For better or worse I have been in about a dozen treatment centers, and in every important category Onyx has met or exceeded the bar set by other facilities. One of the few places that was worthwhile and I know I can benefit from regardless if I am in crisis or just want to work on growing. The medical staff is extraordinarily knowledgeable and attentive, the accommodations are comfortable (great beds, smart TV in every room, and tons of outdoor space with a pond and walking trail). The groups are also engaging and interesting. The food is too good to be true, literally steak and seafood once a week and plenty of other options including a salad bar.
-Zachary S.
There aren't enough words to describe how thankful we are with Bunny (Clinical Director) and Ryan (Case Manager) for how caring and professional they were at all times during my daughter's stay at Onyx.

They prepared my daughter greatly to her way yo PHP.

Their staff is also very nice and attentive at all times. The venue is very clean with amazing food.

We highly encourage everyone to try them if you or love ones are in need of great mental and substance abuse help.

Onyx is your place to be!
-Junior A.