That stems from the fact that the Canada Health Act does not provide for military members to receive provincial health care. They must have private insurance to access that care. That may be due in part to a shortage of professionals who work for National Defence, or simply for other laboratory services and so on. We also didn't audit the analysis they conducted of this new model or whether they had assessed the alternative cost that that would have added if they offered the services themselves. Perhaps you can ask the departmental representatives if they have done that kind of analysis.
Evidence of meeting #16 for National Defence in the 39th Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was doctors.
A recording is available from Parliament.