Sounds like you had a wonderful patient who was grateful for you doing your craft. Do a compliment sandwich, but do it sincerely.
Complement Boundary Complement
“Oh my. I’m flattered. Thank you, but I’m not comfortable with that right now. You’ve been a wonderful patient and I enjoyed working with you too.”
This is just an example of the compliment sandwich structure and you should adjust the wording to serve you.
As for the phone number, just tell him that you were doing your job and seeing him better is all the reward you need. Again, adjust the wording for your truth.
I’m not much of wine drinker myself, but I once did a chef menu with the wine pairing. Every two dishes, they’d bring out a new glass of wine. It was kind blowing how the would taste one way with the first dish and a completely different way with the second dish. I’m not sure I can tell the difference between a $12 bottle and $40 bottle, but in that one meal i understood two things: first, if you know what your doing, wine and food pairings can be magical and, second, I don’t know what I’m doing.