This statement by a council of Native American Elders sums up the problem. You could try and contact some of the people listed here and see if they know this man and what his standing is.
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sustainedaction.org]
Someone posted here describing her involvement in two dysfunctional groups whose leaders claimed to be shamans. You might PM 'cozyquiltz' and see if she crossed paths with the person you're describing.
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board.culteducation.com]
'soul retrieval' does [i:a21e5ab6bc]not [/i:a21e5ab6bc]sound like something that genuine Native American medicine people would do--however it is an entree on many New Age menus.
There is a big thread discussion on this topic here
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board.culteducation.com]