Matthew Evan Iorianni, 27, from Albion Park, repeatedly defrauded authorities by using his mate's personal details to book ambulance trips and attend a doctor's appointment, then lied to that same friend about having terminal cancer.

Iorianni told the friend he was a trained barrister, however, according to Iorianni's LinkedIn profile, his most recent job was working in customer service at Westpac Bank.

His profile said he deferred his law studies in 2012 but intended completing the course and "specialising in criminal law".

Arresting officers labelled Iorianni a "compulsive liar", saying he was wanted on two outstanding arrest warrants in Victoria for similar offences.

Iorianni pleaded guilty to charges of using an altered prescription and using identity information to commit an offence and was sentenced to a 15-month supervised community correction order in Wollongong Local Court on Tuesday.

Representing himself in the proceedings, Iorianni said he wanted to use his arrest as an opportunity to "clear this nasty and shocking addiction".

"I would jump at the chance to stop this...it's not a life, it's an existence," he said.

"I don't want this to continue."

He asked for supervision by Community Corrections staff to keep him on the straight and narrow.

"I absolutely will use this opportunity to get better...the addiction itself, it changes a person's character," he said.

"Things are done that shouldn't be done and are regretted later in the piece."

Court documents said Iorianni came to police attention on February 15 this year after a pharmacist reported receiving a forged prescription for the pain killer Tramadol in a false name.

Officers spoke to Iorianni a week later. He denied writing the fake script but admitted seeing the doctor under a false name.

When police spoke with the man named on the prescription, he and his wife said they were good friends with Iorianni but denied any knowledge of the script.

Further investigation revealed Iorianni had taken three ambulance trips using the man's name and address.

The couple was hit with a $395.70 invoice for a trip on January 27 and were advised by NSW Ambulance two more had been taken in the interim.