"The issue is getting people in and getting them vaccinated," he said.
Frustrations boiled over this week about the slow pace of the rollout, with federal and state authorities blaming each other while GPs complained of being unable to get more doses.
Port Stephens GP Super Clinic director Anna Davidson said they had spent about $25,000 on a new fridge and other improvements so they could vaccinate up to 500 patients a day.
Instead the clinic has been advised it will get 50 vaccines a week for the next 12 weeks, taking them up to July 1.
"We were pretty gobsmacked," Dr Davidson told ABC's Patricia Karvelas.