Nearly 1,500 patients who weren't registered with a GP attended A&E over the past 12 months.
The figure was given by Health Minister Claire Christian, in response to a question in Tynwald this week from Onchan MHK Julie Edge.
She said it's out of a total of 31,213 people who visited the emergency department at Noble's Hospital over the year.
Ms Christian also talked about trends in the numbers:
Yacht club worries over lifeboat retirement
One nuisance cyclist ticketed in more than three years
New ministerial post created by chief minister
Huge floating book fair to arrive in Douglas next month
Stay safe for Hop Tu Naa tonight
Special Olympics fundraiser needs you
Peel ready for bonfire and fireworks later
Government: "UK never told us about child murderer"