No Republicans voted for the Affordable Care Act. 'The House passed the Senate bill with a 219–212 vote on March 21, 2010, with 34 Democrats and all 178 Republicans voting against it.' https://en.wikipedia.org/wiki/Patient_Protection_and_Affordable_Care_Act
Obama made many concessions to the Republicans to achieve some bipartisan support, most notably dropping the public option. Every concession only resulted in more demands. You might understand that Democrats might be reluctant to support any Republican healthcare initiatives given this history.