She will replace Professor Steve Field in November, and will hold the post for three years.
Dr Gerada (pictured) is currently vice chair of the college council and was previously chair of the ethics committee. She also established the college's Substance Misuse Unit.
She is also the medical director of the Practitioner Health Programme, a confidential help service for doctors and dentists with mental health or addiction problems in London, and says she will continue to provide services to the programme throughout her tenure as RCGP chair.
She has been a GP in Lambeth since 1991. Prior to general practice, she worked in psychiatry at the Maudsley Hospital in south London, specialising in substance misuse.
Dr Gerada said: ‘It is an enormous privilege to be appointed chair of the RCGP at such a significant and historic time for general practice.
‘As a frontline clinician, I am well aware of the of the major challenges and opportunities facing modern general practice and am looking forward to leading the College through the next exciting stage of its development, including our 60th anniversary in 2012.'