"There is probably no clinic in Europe that handles as many cases as we do."
The iconic driver, who won seven world titles between 1994 and 2004, was injured while skiing in the French Alps and placed in a medically induced coma for six months.
He regained consciousness on June 16, 2014, before being moved from a hospital in Grenoble to the University Hospital of Lausanne.
On 9 September 2014, he was moved to his family home where he reportedly remains paralysed - though details on his condition have been kept secret.
Last year Schumacher's team was forced to deny claims made in a German magazine he was now able to walk with the aid of therapists, the Sun reported.
The sporting icon reportedly receives $195,000-a-week care at a special medical facility at his Lake Geneva home, but exact details about Schumacher's condition have not been made public.
His manager Sabine Kehm responded to requests for a comment on the latest story, saying: "Michael's health is not a public issue, and therefore we will not comment on it."
In September last year, Felix Damm, Schumacher's lawyer, told a German court that his client "cannot walk", in response to false reports from December 2015 in German publication Die Bunte that he could "walk a couple of steps".
