Centrist House lawmakers from both sides of the aisle are working together privately on healthcare reform. The talks have been so secretive and politically sensitive that some members interviewed by The Hill refused to name other legislators involved in the bipartisan effort. Members of the centrist GOP “Tuesday Group,” the New Democrat Coalition and the 52-member Blue Dog Coalition have been discussing both the policies and politics of moving their middle-of-the-road ideas in a body of Congress usually dominated by liberal or conservative ideology. Those centrist factions are wary of the proposals their respective leaders will introduce this month. Blue...