No modifier is needed specifically for the NP unless one of your payers requires it, but in my experience that is rare. In all of my career, I've only encountered one payer (which was one state's Medicaid plan) that asked for the SA modifier for NP providers. If your NP is ever assisting at surgery, you'll use modifier AS instead of the 80 that you would use for a physician assisting. Other than that, as long as you're billing under the NP's credentials, you just code and bill their services as you would any physician's. Medicare payers will reimburse your NP at 85% of the physician's fee.I suppose my biggest question is what, if any, modifiers are needed. We will be billing under the NP's credentials. It's all new for our office and for myself as well. Thank you for your help.