A central Florida urologist has posted a sign on his office door warning supporters of President Barrack Obama to find a different doctor. The notice on Dr. Jack Cassell’s Mount Dora practice says, “If you voted for Obama, seek urologic care elsewhere. Changes to your healthcare begin now, not in four years.” Cassell told the Orlando Sentinel on Thursday he wasn’t questioning patients or refusing care, because that would be un-ethical. “But if they read the signand turn the other way, so be it,” he said. Cassell, 56, also provides Republican reading material in the waiting room-probably not a risky move, given that Mount Dora’s 10,000 residents and the surrounding area lean heavily conservative. A spokeswoman from the Florida Department of Health, which licenses physicians and investigates complaints, said Friday there was no law prohibiting Cassell from advertising himself that way. “Because there is no statute, there would be no grounds for a complaint,” spokeswoman Eulinda Smith said. A University of Florida professor said Cassell is walking a thin line between free speech and professional obligation. William Allen said Cassell may be within his rights if he doesn’t quiz patients about their politics and hasn’t refused to see anyone.