Sir David Nicholson said he supported whistle-blowers and had always been “honest and truthful” with MPs.
Tory MP Stephen Barclay had said he was either “complicit in a cover-up” or had not asked questions about confidential payments made to departing staff.
Since 2008 the MP discovered that 52 payments totalling £2m have been made.
It is not known if the payments made by 30 hospitals who responded to Mr Barclay’s Freedom of Information requests included gagging orders.
In March, Health Secretary Jeremy Hunt said gagging clauses in N.H.S severance agreements must end.
Courtesy of BBC News & Daily Telegraph