The Diamond Rehab Thailand

Meet Our Dedicated Team

At The Diamond Rehab Thailand, we created a very diverse therapeutic World class team of professionals. We offer CBT/DBT, the Minnesota model, exercise, meditation and mindfulness. Together we have over 45 years’ experience working in the field of Addiction. Contact our team and let our family take care of yours!

Theo de Vries – Managing Director

Theo de Vries, 45 years old, father of three children, married to Panwadee de Vries, has lived full time in Thailand since 2012. He is considered one of the pioneers in Thailand, opening one of the first rehab centres in 2014 and making it grow into an international accredited rehab centre where he and his team treated over 1.000 clients.

In 2020 Theo decided it was time to open a smaller centre that aims to be more made to measure. "Not every client is the same, and everyone needs a different approach." Theo's favourite quote comes from Gabor Maté. "The first question is not why the addiction; it's why the pain?"

If you decide to go to The Diamond rehab center in Thailand, you will be treated as such; respectful, personalized, and above all, as a human being. Theo is aware that the success of the client's recovery starts with the person's willingness and hard work to change; excellent therapy will do the rest.

Theo created a Multi-Disciplinary Team of experts from all over the world, combined with over 75 years of helping people recovering from a life full of darkness towards a life that's worth living.

Marijke Lamont
Marijke Lamont – Admissions Manager

When calling Diamond Rehab Thailand, Marijke will most likely be the first person you speak to. Her professional, yet compassionate mannerism will gently guide you along as you make one of the most empowering decisions of your life. There isn’t a problem too big or too small that she won’t be able to help talk and guide you through.

Originally from South Africa, Marijke is a qualified and accredited Counselor, Recovery Coach, and CBT Coach, Practitioner. Having first worked as a self-employed counselor in South Africa, Marijke made her way to Thailand where she spent almost two years working as an Admissions Manager at a rehabilitation facility.

As a recovering addict herself, and having worked as a counselor for a number of years, Marijke is able to relate and empathize with clients on a very deep level, whilst offering them the calmness they need as they transition into treatment.

Marijke is affiliated with various counseling and coaching bodies and is therefore also able to offer you professional therapeutic advice as you make your way into treatment.

Kassondra Glenn LMSW - Diamond Rehab Consultant
Kassondra Glenn, LMSW - Consultant

Kassondra’s practice is grounded in the belief that we heal in authentic, attuned relationship. She holds the therapeutic alliance in high regard, and approaches sessions as a co-created space of exploration. Clients are encouraged to bring the nuance of their experience. Using insight and humor, Kassondra is passionate about engaging those she works with in discovering and reshaping their narratives.

Kassondra is a graduate of the Silver School of Social work at New York University and Level I AEDP (Accelerated Experiential Dynamic Psychotherapy) therapist.


Ahmed Zayed MD - The Diamond Rehab
Ahmed Zayed, MD

Ahmed Zayed, MD, is a physician, an author, and a fitness lover, and he has a deep-seated desire to assist others in leading happier and more fulfilling lives.

Dr. Ahmed Zayed, who received his degree in medicine and surgery from the University of Alexandria, is committed to sharing his expertise with his audience and believes that readers deserve accurate information.

Dr. Zayed has the ability to explain difficult ideas in a way that a layperson can understand while still incorporating a scientific perspective into the discussions that surround those ideas.

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