Remarkable Physios managing director Melissa Davidson said her company had provided physiotherapy services at the Frankton-based hospital for seven years.
In July, she re-tendered for the contract but missed out and her service, which employed two physiotherapists, including 24-hour on-call cover, ended yesterday.
The health board was replacing her service with its own physiotherapist because it was "cheaper", she said.
"They decided to directly employ somebody at the Southland DHB. We don't know and we can't advise our patients what cover there will be from Monday," she said.
She understood a physiotherapist from Invercargill would fill in until a permanent staff member was found.
But despite repeated requests, the health board had not informed them about replacement cover.
The board could not be contacted for comment yesterday.
Mrs Simpson, who moved from Dunedin to Queenstown in January, had two aneurisms nine years ago and needs weekly physiotherapy.
She said she had built up a great rapport with the staff.
She said she had no idea if she would get continued care from Monday as there had been no communication from the Southland health board.
She is worried about the impact it will have on her recovery, especially if she does not continue to get home visits.
Her husband, David, said the Southland health board's "number-crunching" was affecting "patient confidence".
Mrs Simpson had been getting group physiotherapy, as well as sessions in the therapy pool and home visits.
If she wanted to continue with Remarkable Physios she would have to pay, he said.
