Desert Island Golf & Country Club is an 18-hole private golf course in Rancho Mirage, California, built in 1958 and designed by Desmond Muirhead. It sits in the $$$ (premium) price range for golf in California. The course is open all year. Tee times can be booked 1 day in advance. Play is generally limited to members and their guests.
Details like fees and seasons change, so call the course before you head out.