Florida doctor missing at sea, boat found off Sanibel coast

A prominent Florida doctor went missing while boating earlier this week — and his unmanned vessel was found Thursday, officials said.

Dr. Chaundre Cross, 49, a radiation oncologist, was last seen Tuesday on his 33-foot Sea Ray dubbed “Vitamin Sea” at a Naples marina, according to officials.

The vessel was found abandoned in the Gulf of Mexico between Naples and Sanibel Island — which is about 25 miles away as the crow flies, the Coast Guard tweeted Thursday.

“Coast Guard crews from Ft. Myers Beach, Cutter Crocodile & Air Station Clearwater continue to search for a person in the water,” the feds wrote.

The Collier County Sheriff’s Office announced it was searching for Cross Wednesday.

“He hasn’t returned and family members are concerned,” officials said.

Cross is a national expert in prostate, breast and brain cancers who served as President of the Board of the Cancer Alliance of Naples, according to his biography on Genesis Care.