A man claiming to be a spiritual healer has said he will continue to offer people cures for cancer and other ailments, despite a recommendation that he stop practising immediately.

A report from the Health and Community Services Complaints Commission was critical of 64-year-old Colin Thompson, who promoted himself as an "esoteric mind specialist".

The commission spoke to his "patients" - some of whom said they had not been cured - and obtained medical opinions about Mr Thompson's treatments.

One doctor quoted in the report said the treatments could result in death if somebody with testicular cancer stopped traditional therapies.

Mr Thompson claimed he could take away the cause of dozens of medical conditions, including cervical, prostate and testicular cancers, as well as schizophrenia, addictions and pain.

He told the ABC he would continue to offer his services, despite the negative finding by the commission.

"If I can cure a person I will," he said.

"If a person comes to me that is eligible for a cure I am not going to turn them away and let them die," he said.

The report, completed last month and tabled in parliament on Thursday, recommended that Mr Thompson immediately cease practising and advertising his spiritual healing business.

"No further claims of the ability to cure or remove the causes of ailments, lift curses or similar related to medical conditions/ailments should be made in the future," it said.

Mr Thompson previously ran a tobacco shop in Darwin's Smith Street Mall.

He said he ran the business, which was near a hotel and pokie machines, so that he could easily make contact with people who had addictions.

Thompson's $500,000 business

Mr Thompson told the ABC he became aware of his healing gift after visiting a spiritual healer in the Philippines in 2000.

"We became friends and it took three years of phone calls and healings for me to be able to contact the supernatural world," he said.

He said he charges $250 to treat someone and gave a money-back guarantee if they were unsatisfied.

In the past 10 years by seeing his clients he had made about $500,000 from the business, he said.

The report found that a review of 41 clients showed while most were in the NT, some were from Western Australia and others were from elsewhere interstate or had no address recorded.

Mr Thompson said he was able to cure people by connecting with their subconscious minds.

"I have a gift, something I have worked on for 14 years now," he said.

"I have an ability to connect with people's subconscious mind, and all sickness and illness comes from your subconscious mind and take the illness or the sickness away, whatever it is," he said.

His technique worked in person or over the phone, he said.

Acting Health and Community Services Complaints Commissioner, Judy Clisby, said that the commission's hands were tied when it came to dealing with the claims of Mr Thompson.

"Essentially there is nothing anybody can do at this stage," Ms Clisby said.

Ms Clisby said NSW and South Australia had created codes of conduct to deal with unregistered health practitioners, but no such code existed in the NT.

She said a national code was being considered by health ministers that could allow prohibition orders to be issued against people who made unwarranted claims.

The complaint against Mr Thompson came after NT Health Minister Robyn Lambley saw some of his brochures.