I have questions about billing CPT codes for our RN that is a certified Breast Feeding Consultant and has her own Medicaid number and NPI. We are billing her visits under the physician but only bill a 99211 whether the visit is billed under the mother or the baby. I have heard of other practices that are doing this but since they are billing under the physician they are billing higher level E&M codes, mostly 99213 and 99203. Is this legal? Thanks!