renewing jar medical with doctor from other jar country?

[Another]

Hi,

i did a couple of searches,

if i have a First class german medical - can i go to a CAA approved doctor to renew it there?
or does it have to be a german approved person? (my guess at the moment).

i only found that its possible to do a CAA abroad if a find a CAA approved doctor abroad, which seems possible. (based on that i figured it has to be the same issuing country)

thanks!