Psychiatrists can also bill the health insurance companies. These are specialists and qualified doctors, e.g. with the specialization “psychotherapy”. But other specialists also offer psychotherapy, e.g. specialists for “child and adolescent psychiatry and psychotherapy”. You will certainly already notice that this field is a bit confusing. Whether someone is successful as a therapist depends only partly on their training, but much more, in my opinion, on their personality and the contact that develops between you and the therapist.