Would you tip at a medical spa?

[thinklikeajellyfish]

I'm hoping you guys can give me some insight. I feel, as a whole, that our society over tips, but I want to make sure I don't insult anyone by not tipping when I really should. Make sense?

I am having laser hair removal at a medical spa. They offer both medical and cosmetic dermatology treatments. Everything from laser hair removal to waxing to facial peels to botox injections. My treatments are going to be performed by a nurse practitioner. What do you guys think?

ETA: The facility is in Beverly Hills, if that makes a difference.