It shouldn't matter as long as they serve you well. Are you stabile? Then they did well. Treating MI is all about treating the symptoms through a trial by error basis. Any monkey can do that. Pdocs are over priced med dispensers, IMHO. My NP and I zeroed in my meds before I saw a real pdoc who didn't do anything except dispense the same meds.
If you feel concern about your present medical providers competence, I'd do some looking elsewhere. Good luck!