The Doral is operated by the Trump Organization, run on a day-to-day basis by the president’s sons Eric and Donald Trump Jr., since their father became president. But Mr. Trump has both frequented and promoted his properties throughout his time in the White House.

In Washington, Mr. Trump regularly meets supporters over dinner at the Trump International Hotel, which has become the most popular venue for political fund-raisers in the capital. And he has spent a total of 308 days since 2017 at one of his properties, or about a third of his days in office.

Over all, Mr. Trump has made visits to at least 13 of his family’s revenue-generating properties since he was sworn in, including golf courses in Ireland and Scotland, according to a tally by The New York Times. The most frequent location is the Mar-a-Lago club in Florida, followed by Trump National Golf Clubs in New Jersey and Virginia.

The use by Mr. Trump of his properties has drawn criticism as has that of other federal government employees who have stayed in Trump-owned hotels in the United States and overseas.

Questions were raised about the Pentagon spending $184,000 in the last two years paying for the Air Force to send dozens of flight crews making stopovers at an airport in Scotland to stay at the Trump Turnberry resort in Scotland.

And during a trip to Ireland in September, Vice President Mike Pence was criticized for staying at the Trump International Golf Links and Hotel in Doonbeg — a resort nearly an hour away from where Air Force Two was holding at the airport in Shannon. The president suggested that Mr. Pence stay there, according to Mr. Pence’s aides.

Mr. Mulvaney said that the president had made a similar suggestion when White House officials were discussing locations for the Group of 7.