I take 200 mg of modafinil a day. Do I need to stop taking them before surgery?

This type of drug will affect the anesthesia.  Talk to your plastic surgeon and anesthesiologist to develop a plan.

Thank you for the question. Online consultants will not be your best resource here. Make sure that your plastic surgeon and anesthesia provider are aware that you have been taking this medication. Make sure also that they are aware of the underlying "condition" for which you  are utilizing the medication. You will find that your plastic surgeon will have very specific instructions, "do's and don't's", for you. Best wishes with your upcoming surgery.

Discuss with your plastic surgeon and your anesthesiologist all of your medicines and medical history.  Follow their instructions on what medications to take or hold.  Best wishes.