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. Let our family take care of yours!

Theo de Vries – Manging Director

The Diamond is founded by Theo de Vries; a pioneer in the rehab industry. Seven years ago, he started one of Thailand’s most successful rehab centers in Northern Thailand. When he took a 6 six months sabbatical in October 2019, he decided that it’s time to create something new, something special that doesn’t exist in Thailand for an affordable price. After a few months of searching for the right location, he found – as he calls it himself – The Diamond. Theo is 43 years old, married and has three children. Theo is in recovery himself and knows from first hand how it feels to overcome addiction and underlying issues. Theo is always willing to share his life story with the clients and be a positive influence towards their recovery. When you call the Diamond, you will speak to Theo personally and he will answer all the questions you may have directly. Theo’s life motto is: “It’s never too late to make a change.”

Drs. Lea Reimers – Senior Clinical Psychologist

Originally from Germany, Lea Reimers studied Psychology at the Radboud University Nijmegen in The Netherlands followed by an additional supplementary Post-Master study for GZ-psychologist (Dutch specialist for complex Mental Health problems).

Meanwhile she has more than 10 years of work experience in different Clinics and Therapy Centers in leading Clinical roles throughout Europe and Asia.

Lea has a broad range of Diagnostic expertise and is trained in various therapeutic methods like EMDR, Cognitive Behavioral Therapy and Mentalization Based Therapy.

Lea has worked in Rehabs in Thailand before and is passionate about supporting people in their recovery, helping them with their possibly underlying psychological problems and empowering clients to find back meaning and strength on their journey to sober living.

Lea speaks English, German and Dutch.

Marijke Lamont – Admissions Manager

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.
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.
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.

Somratchanat (Ying) Luecha
Somratchanat (Ying) Luecha – Partner – Accounting Manager PhD

Ying graduated from Burapha University – PhD in Accounting. Besides being a partner in the company Ying also takes care of all the important back office administration issues that need to be addressed for The Diamond Rehab such as taxes, work permits etc. as well as managing the accounting for The Diamond Rehab. One day per week Ying is an adjunct professor at Burapha University.

Panwadee (Au) Boonyok – De Vries – General Manager

Panwadee has many years’ experience running a treatment center in Northern Thailand on the hospitality side of things. She knows what is needed and oversees all the inquiries coming from clients as well as being the end responsible person for all the Thai Staff working at The Diamond Rehab. Panwadee is married and has two children.


Aor has a background in hospitality, including a BA in Hospitality and Business English. She has worked at several of the famous hotels and resorts in Northern Thailand. Her focus on service-mindedness makes everything go a bit smoother in coordinating the Thai staff and foreign client needs. She takes care of the bookkeeping, translation, transportation and accommodation as well as overseeing the hospitality side of The Diamond Rehab. We are very fortunate to have her at The Diamond Rehab.

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