Former patients of TV doctor Dr Arackal Manu Nair are taking legal action for allegedly performing unnecessary operations.
The General Medical Council (GMC) is currently investigating allegations that prostate cancer treatments were performed on patients who did not suffer from the disease.
Dr Nair practised at Heartlands NHS Hospital in Birmingham and the Spire Parkway private hospital in Solihull.
The consultant urologist has previously appeared on Channel Four’s Embarrassing Bodies.
Prior to suspension, Dr Nair treated more than 170 radical prostatectomy patients, who may have been affected, and have been directly contacted by the NHS trust.
Spire Parkway Hospital told the BBC Dr Nair had not worked there since 2014. Heart of England NHS Foundation Trust, which manages Heartlands NHS Hospital, said he had been "excluded from the trust since April 2014".
Amongst the allegations, Dr Nair is said to have given laser treatment - a high intensity focused ultrasound (HIFU) - to patients which has not yet been approved by the National Institute for Clinical Excellence (Nice).
The General Medical Council placed conditions on the doctor’s registration as of 11 July 2016 until 3 May 2017, imposing restrictions and supervision on medical services he may carry out.