But he has been advised the plans will not affect the New Zealand medical workforce.
Medical groups in New Zealand disagree.
Doctor unions are concerned at the easing of restrictions from April, which they say is likely to increase the lure of higher salaries and worsen New Zealand's shortage of doctors.
Australian laws on overseas-trained doctors, including New Zealanders, now prevent GPs from providing non-hospital health care funded by the Medicare insurance scheme for 10 years after becoming medically registered in the country, unless they are granted an exemption to work in rural or remote areas where there is a shortage of GPs.
But a Bill to become law in April will lift the restrictions on New Zealand citizens and permanent resident doctors who gain their first medical degree from a New Zealand or Australian university.
Mr Ryall said initial advice from Health Workforce NZ was that the Australian legislation would have minimal impact on the New Zealand workforce.
"However, it is one of several subjects I will be raising . . . with Australia's Health Minister.
"The Government doesn't want to rely on trade restrictions to keep doctors in New Zealand.
"We are making significant policy changes to keep doctors here, including the voluntary bonding scheme, and more opportunity for research and leadership."
