I have been reading him as well. Don't think he is a psychologist but rather the British equivalent of a family practitioner. The Brits probably still call it general practice. I have never seen any reference to his being a psychologist as well as a physician.
English doctor, writer and social commentator, Theodore Dalrymple (pseudonym of Anthony Daniels), has practised medicine among the very poor and oppressed in several continents and, more recently, at a public hospital and prison in England.