Primary Health Properties said it had acquired medical centre group Chapeloak Investments for £5.4m.
Chapeloak's sole activity was the ownership of the Oakwood Lane medical centre in Leeds.
The 1,177 square metre property was fully let to a GP practice that served over 13,500 patients.
Separately, the company said a subsidiary had been contracted to provide development funding for the construction of a medical centre in Langwith, Derbyshire at a cost of £1.8m.
Ownership of the centre would be transferred to Primary Health Properties upon its completion.
The transaction would increase the company's portfolio to a total of 315 assets, with a gross value of just over £1.5bn and a contracted rent roll of just under £80m.