Health authorities in New South Wales are asking patients of a deregistered Sydney doctor to go for a second opinion. The doctor is being investigated in connection with a range of complaints.
Alarm bells were first raised last year about billing practices at the Mid-City Skin Cancer Centre in George Street, in Sydney's CBD, where David Lindsay practised between 1998 and December 2007.
Health Care Complaints Commissioner Keiran Pehm says Mr David Lindsay was deregistered two months ago, after authorities received more than 53 complaints about him.
"We had a lot of complaints about rudeness. He threatened to sue people who complained about him," he said.
"People found him intimidating, there were issues of consent about treatment of patients."
The complaints prompted a review into treatment his patients had received. An expert panel looked at the test results of more than 9,000 people.
Mr Pehm says the probe found the former GP had not removed enough of the cancer or surrounding tissue in some cases.
"One patient had a lesion removed from his cheek and subsequently went to another doctor and had it diagnosed as cancerous," he said.
The Health Department's acting chief health officer, Kerry Chant, says inadequate record keeping meant some patients who needed further cancer surgery could have missed out.
"The view is that he adopted a watch-and-see approach in cases perhaps that, in the view of experts, may have required more urgent re-excision," she said.