Margaret McCarthy lives so close to Frisbie Memorial Hospital, a recent blood test appointment took 15 minutes, including travel time. But the Rochester hospital isn't included in the only provider network available to New Hampshire residents buying health insurance through the new government marketplace. And while the thought of going elsewhere is enough to make McCarthy's blood boil, she's also angry that, in an ironic twist, most Maine residents who buy marketplace plans can use a handful of New Hampshire hospitals, including the one four miles from her home. ''Somebody needs to get on the stick and see that the people of New Hampshire have more choices,'' she said.