Vos Beerthuis is a psychiatrist and educator in psychiatry at the GGZ InGeest in Amstelveen. He studied medicine at the VU in Amsterdam and specialised as a psychiatrist and a couples and family therapist at RINO. Beerthuis has got more than 35 years of experience at the crisis center. Vos is currently working at the first aid psychiatry in Amsterdam. Since 1990 he also has his own practice.