This is actually the first question you should address a psychotherapist at your initial get-to-know-each-other session. They should be able to introduce themselves thoroughly from a professional point of view and explain their work method and type of the therapy they specialise in. First sessions are not just an exchange of information between the patient and the specialist, but also the negotiation of how the therapy will be assessed, how long it may last and what are the expected results based on the addressed goal. First encounters in therapy are like job interviews, where you are the client and the therapist is your service provider. Make sure you know well who you want to hire!