You could likely find some "Professional Studies" or Liberal Studies" type master's program out there where you could basically just design your own degree. If your primary motive here is just to complete a graduate degree for the sake of teaching, then there are tons of for-profit schools who will cheerfully work with you with generous transfer policies and take your money. It's up to you whether you really wish to add a school like this to your resume, though. (Once you do it, it will kind of be out there forever.)
That all said if I understand your plan here correctly, you are wanting to transfer med school credits to a master's program, but then still utilize these credits to complete your medical degree? Is this correct? If so, have you considered the ethical implications of such a move? Very few graduate programs will allow the transfer of credits that were applied to a prior degree. Thus, if you were discovered down the road doing this, you might be forced to resign/forfeit one (or both) of the degrees. This could be professionally catastrophic, obviously. And it could potentially impact your professional reputation.
That all said, if I am misunderstanding your situation, please simply disregard any irrelevant parts of this reply comment.
Regards from Idaho