Originally a native of The Netherlands, Frank started his career in 1984 on in the Dutch Royal Air Force and since has worked at a variety of hospitals in both the Netherlands and the UK. In the UK, he has also been involved in training new anthroposophic doctors, including at the University of Bristol Medical School and at the Severn School of General Practice. He also serves on the UK Government Advisory Body on the Registration of Homeopathic Medicinal Products.