Barwon MP Kevin Humphries says he's asked the state health minister to look into the potential impact of cuts to economy seating on Broken Hill's only rail link to Adelaide.

Some older residents and doctors have voiced concern about plans to remove economy seating from the train, which would means passengers needing to make a day trip to Adelaide would be forced to book a more expensive sleeper car.

The price of a concession ticket to Adelaide is set to increase from $187 to $689 when the changes are introduced in July.

Ticket prices will also increase, but the operator, Great Southern Rail, has said the federal government's cut to concession subsidies has forced the changes.

Kevin Humphries said he's asked state health minister Jillian Skinner to look into the concerns raised.

"The ministry is trying to get some data on the amount of people or the number of people that certainly would have been using the rail link between Broken Hill and Adelaide for health services, just to see who could be affected," he said.

"Obviously we want to make sure that there's an acceptable transport link between Broken Hill and Adelaide.

"We have a health agreement with South Australia between Far West Health and the South Australian government, so there is a link there, and obviously transport needs to be part of that connection."

Great Southern Rail came under different management earlier this year, with the new owners saying they wanted to focus on the high-end tourism market.

Federal health minister and local MP Sussan Ley is meeting with Great Southern Rail on Thursday this week.

"If I am told that by putting that concession back all of those places will be made available, then I will go in to bat as hard as I can with the minister responsible, Scott Morrison," Ms Ley said.

"But I don't think it is about the concession.

"I think it is about a changed model for the new owners of Great Southern Rail, who appear to be moving towards a luxury train experience type of service."