Actor Michael J. Fox’s opening of a Canadian chapter of his Parkinson’s charity is sparking concern among existing groups that the high-profile organization will overshadow ongoing efforts to fight the disease there, The Globe and Mail reports.

The Canadian-born star, who was diagnosed with the degenerative brain disease in the early 1990s, formally opened the new arm of his Michael J. Fox Foundation for Parkinson’s Research in Toronto last week.

Joyce Gordon, president of the Parkinson Society of Canada, worried that Mr. Fox’s organization could undercut donations to her group and divert funds and attention from existing education and support campaigns.

Mr. Fox said the notion of his group competing with other Parkinson’s charities “is crazy to me. We’re grateful for anybody who’s involved in any facet of the journey that Parkinson’s patients are on.”