Dr. Mehmet Oz promised senators on Friday to fight health care fraud and push to make Americans healthier if he becomes the next leader of the Centers for Medicare and Medicaid Services. But the former heart surgeon and TV personality dodged several opportunities to say broadly whether he would oppose cuts to Medicaid, the government-funded program for people with low incomes. Oz, President Donald Trump’s pick to be the next CMS administrator, also said technology like artificial intelligence and telemedicine could be a key in making care more efficient and accessible. “We have a generational opportunity to fix our health care system and help people stay healthy for longer,” he said. The 64-year-old was a respected heart surgeon who turned into a popular TV pitchman. He hawked everything from supplements to private health insurance plans on “The Dr. Oz Show,” which ran for 13 seasons and helped him amass a fortune.