NEW ORLEANS, La.—Although they received millions of taxpayer dollars, it can be hard to find the offices of health service providers in the Big Easy. 

The House Oversight Committee is intensifying its probe into allegations that the state of New York has been improperly matching federal funds under a Medicaid program used to sustain safety-net hospitals – shortchanging such providers by having them put up their own funds to cover the state’s match – as part of an unlawful scheme to shore up Albany’s shaky finances.