Douglas, a CIPFA member, is a former director-general of finance at the Department of Health, where he oversaw one of the world’s largest and most complex accounts consolidations covering some 700 separate organisations.
He has also served as head of the government finance profession and started his career with the National Audit Office. He was finance director for National Savings & Investments from 1999-01.
Former chair Ed Smith – who is also a CIPFA member – retired last week.
NHS Improvement, which became operational in April last year, brings together the functions previously held by Monitor, the NHS Trust Development Authority, Patient Safety and the service’s advanced change and intensive support teams.