Thanks to Facebook fan Lynn Manning, we have a positive ID: “Indian Bob” is Dr. Robert Primeaux, a Vietnam veteran and actor from the Standing Rock Sioux Tribe. Primeaux sits on the honorary board of Before They Go, an educational charity that pays tribute to military veterans.
Primeaux is seen as an authority on Native culture, with particular expertise regarding horses. This article from KBR Wild Horse and Burro News describes a Native horse blessing he conducted.
Doing horse blessings doesn't mean he can do human blessings, of course. That every Indian has spiritual abilities is a myth and a stereotype.
For more on the subject, see "Indian Bob" on Celebrity Wife Swap.