For years, Dr Albert Yuen Wai-cheung has made the process of sex-change surgery slightly easier for patients, by performing all the operations himself.
But he is about to retire, and with no doctor stepping forward as his successor, Yuen predicts his "one-stop" shop will be replaced by teams of surgeons.
Yuen, 57, plans to retire in two years and none of his colleagues appear interested in taking over his practice.
They were unwilling to specialise in the area, he said, so several doctors might be required, with different teams performing operations on men and women, as well as focusing only on a specific part of the procedure.
"They think this kind of surgery is different. They may be thinking, 'There are many other surgeries to do, why do this?'"
Yuen performs five to six sex- reassignment operations every year. He hoped the Hospital Authority would give more priority to these patients, as he believed the surgery was crucial for their overall well-being.