His clinic is in Bom Sucesso, a suburb of Rio de Janeiro. Rubens was trained as an engineer He is not the first Brazilian to make the claim.
He follows Zé Arigó, who died in a car crash in 1971, and a string of other claimants.
Farias began claiming reincarnation as early as 1986. On a typical weekday, as many as 800 patients will line up outside the hall he uses (on weekends, it serves as a bar), waiting for treatment sessions which might be as short as 30 seconds.
While in character as Doctor Fritz, he adopts a German accent and expressions such as "Schnell!" In some cases, patients get a homemade injection, reportedly a mixture of alcohol, iodine and turpentine. Medical hygiene is minimal.
The Regional Medical Council for the state of Rio de Janeiro labels Farias a "charlatan" taking advantage of the chaotic Brazilian public health system, and has sued to halt his activities.