My surgeon, I discovered, sees patients with uneventful recoveries twice, one week (when some are still in hospital) and three weeks--longer, of course, if surgical complications keep him in the picture--after which he gives them back to their cardiologists, who may have referred them in the first place. I have heard this is fairly typical. If future surgeries become necessary, of course, you will be referred back to the surgeon.
Trust me, you do not want to be followed regularly by your surgeon; his forte is cutting, not patient consideration of random complaints. My surgeon is actually one of the less impatient surgeons, and I am still VERY happy to be back with my cardiologist who takes time to check out little complaints and answer questions and make sure the little signs and symptoms are resolving themselves as they ought.