Esther Kühler, M.D.



Psychiatrist, was born (1972) and raised in the Netherlands. Esther received her medical education at the University of Leiden. Esther has always been fascinated by the complexity of the brain and initially trained to be a neuro-surgeon. A deepening interest in people’s behavior led her to a specialization in psychiatry. Esther was certified as a psychiatrist in 2008.

From 2008 – 2011 Esther served as lead psychiatrist at a mental health clinic in the Hague. Esther then established her private practice in 2011. Esther treats many expats in her practice and acts as an advisor to a number of multinational companies on issues dealing with mental health. Esther also has experience in the treatment of addiction and is a consulting physician at various hospitals. Esther has supervised the psychiatric training of numerous medical residents.

Esther is founding psychiatrist at Kühler & Trooster International Mental Health.

Esther is excited to focus all her energies and expertise at Kühler and Trooster on the treatment of expats. Esther’s practice is open to adolescents and adults.


Denise Trooster, M.D.



Denise Trooster, MD, is an expert in clinical psychiatry specializing in the counselling of both adult and adolescent expatriates. She provides diagnosis and both psychopharmacological and alternative treatment based on over 15 years of experience as a clinician in Europe, South America and Asia.

Having both lived and worked internationally, Denise has a unique personal understanding of the underlying challenges of living abroad. Additionally, she has extensive professional background within international psychiatry. She gained theoretical knowledge through her certification and research on the various psychiatric challenges and issues faced by expats in the Middle East. Moreover, Denise has worked as an emergency physician in both Spain and Aruba. Most recently, Denise has served as Director of the Intensive Crisis Clinic in Amsterdam. In conjunction with her practice, Denise works as a psychiatric consultant for Sinaicentrum Amstelveen. She lends her expertise to improving psychiatric practices in Sierra Leone through a local non-governmental hospital.

Denise undertook formal training in Psychiatry from the GGZ Eindhoven and Parnassia Bavo institute in The Hague. Prior, she obtained her medical doctorate from the University of Amsterdam in general medicine. She currently holds certifications in addiction psychiatry, nutrition and non-Western medicine.

josja eggen, m.a., dclinpsy



Josja acquired her Master’s degree from the University of Amsterdam (UvA) in 2001 and further gained a Doctorate in Clinical Psychology (DclinPsy) from the University of Birmingham, United Kingdom in 2008.  From 2001 until 2012 she has lived in the United States and the United Kingdom, where she has worked as a Chartered Clinical Psychologist in several primary and secondary care mental health services within the NHS (National Health Service). After her return to The Netherlands in 2012, she has been BIG registered as a chartered GZ Psychologist.  

Josja’s way of working is eclectic; she draws from different evidence based approaches in her clinical work like cognitive behavioural therapy, EMDR, Brief Solution Focused Therapy and Acceptance and Commitment Therapy (ACT). She has affinity with family therapy, narrative therapy and offers therapy both in Dutch and English

Anna Costello, M.SC.



Anna has a Master’s degree in Psychology from Leiden University, specialising in Clinical & Health Psychology.  She works with both adults and children on an individual basis with a focus on cognitive-behavioural interventions. 

She grew up in Ireland and England and has since lived and worked in France, Japan and more recently the Netherlands. She previously worked in international HR before training as a Psychologist. 

Anna offers treatment in English and French.

carlijn de bruijne,



Carlijn has a background in clinical psychology, having obtained a masters degree from Leiden University. She was trained by Fonagy and Bateman (Anna Freud Centre, London) in mentalization based treatment (MBT) to treat personality disorders. For several years she worked as a therapist in a specialized mental health care clinic in the Netherlands. She treated patients on an individual basis as well as in groups using mostly cognitive-behavioural techniques and psychodynamic therapy. 

In addition to her work as a therapist, Carlijn works as lecturer for a post academic training institute for psychology. She teaches several techniques, including how to work with patients suffering from somatoform disorders or negative self-image. Currently she is researching the effectiveness of treatment offered to patients diagnosed with borderline personality disorder. 

Carlijn offers treatment and diagnostics to both adults and adolescents in Dutch, English and French.

roy kamienchik, M.SC.



Roy is a psychologist in the clinical and the organizational areas. He has a Master's degree in clinical psychology and a Master's degree in social-organizational psychology. He works with adults on individual basis with a focus on cognitive behavioral interventions as well as interventions from mindfulness-based approaches (such as the acceptance commitment therapy).

He grew up in Israel where he completed his Bachelor degree in psychology and film studies, and his first Master's degree in social-organizational psychology.  He moved to the Netherlands where he competed a master's degree in clinical psychology at Leiden University. Alongside his work in the clinical area, Roy has worked for several consultancy firms as an organizational psychologist, mostly focusing on NGO's.

Roy offers treatment in English and Hebrew.

petra riedlin, M.SC.



Petra trained at the Minster Centre in London obtaining a MA in Integrative Counselling and Psychotherapy.  She spent a number of years working within the Camden and Islington NHS Foundation Trust and the Haringey and Barnet Mental Health Trust in London providing short term psychodynamic therapy to clients from various religious, ethnic and social backgrounds and with diverse sexual identities.  

Petra has been in private practice offering short term and open-ended therapy to adults and adolescents since 2009.

Petra is an adult third culture kid (ATCK).  She was born in Japan and has lived in 8 countries and more than 14 cities. She also holds a BA (eqv) in Psychology and a MA in Philosphy from University of Glasgow and can offer sessions in English, Dutch and German.




Jolien Louwerse acquired her Master’s degree from the University of Amsterdam (UvA), specializing in Clinical Developmental Psychology. 

Jolien has always been fascinated by different countries and cultures; she studied a senior high school year in the United States, and travelled to Uruguay for a volunteer project. For several years Jolien has worked at the mental health care facility of the island Sint Maarten, where she gained experience helping the local community, as well as expats with their psychological challenges.

Jolien is an all-round psychologist trained in Cognitive Behavioral Treatment (CBT) and trauma therapy EMDR. She offers diagnostic assessments and treatments to adolescents, adults, and families in both Dutch and English.

zita meijer, ph.d.



Zita has a background in social psychology, obtaining her master’s from the Free University (VU) Amsterdam and her Ph.D. from the University of Virginia, United States, specializing in cultural psychology. Zita has lived in the United States as well as in Japan, where she spent three years doing cultural comparative research. In addition to speaking native Dutch, Zita speaks both English and Japanese.

In addition to her academic studies and research, Zita was trained in The Work of Byron Katie and Acceptance Commitment Therapy, both third generation cognitive behavioural therapy (CBT) approaches. She is trained to do EMDR trauma-treatment and has further expanded her psychotherapeutic palette with a schema-focused therapy approach.   

For many years, Zita has worked as psychologist in her private practice, catering mainly to the expat community in the Netherlands. Zita has been affiliated with the Royal Tropical Institute (KIT) in Amsterdam, where she taught Intercultural communication, Effects of a long-term stay abroad and Introduction to Japanese Language & Culture.