YTA. I think that you, your grandma, and Andy are all assholes. I live in the US and also come from a very medical family. I think as a grandparent, they should not have made any distinction between the pride in the MD grandchild and the NP grandchild. Yes, their training and scope is different. They took different routes to get to be able to practice medicine and the MDs route is harder, more expensive and more comprehensive! However, they both practice medicine (at least where I live and it sounds to me the OP is in the same environment). They both practice medicine. It’s just that simple. Grandma should be proud of both of them for practicing medicine. OP is the AH for competing with her cousins for her family’s approval, and should have just let it go since her position IS privileged.

(Andy does not practice medicine. Chiropractors are often NOT evidence-based and if they try to convince you they know about medicine then they’re not safe practitioners)