Federal health officials have stepped up a probe into suspected Medicaid fraud at senior care facilities in New York City. Mehmet Oz, who leads the federal agency that oversees Medicare and Medicaid, visited two facilities in Queens on Tuesday, according to a report published on Wednesday, October 21. More than 80 sites had been put on notice as officials reviewed possible billing problems. The visits focused on Kent Senior Care and Evergreen Adult Day Care. Oz and…