Hi,
medical gymnastics especially
What do you mean with "medical gymnastics"? Is that some kind of group therapy? Or are you talking Sports Physiotherapy? Or Physio in a Resthome?
any difference in the treatment prescribed
In Australia, NZ or GB (not sure about Canada, but likely to be the same) Physio is not prescribed!!! We get a referral from other health care professionals. Those referrals give a short history and mention the current complaints. Or the clients come just by themselves. The rest, e.g. determining the course and duration, frequency and type of intervention is what you have to figure out yourself.
Sometimes your treatment is covered by an Insurance, and they might have ideas about how many treatments they cover. And they determine the cost, so you will have to adjust your treatment time to that or ask the client to pay a surcharge to receive a more decent treatment duration.

Hope that helps.

Cheers,
Fyzzio