Physicians will usually bill (and be paid) a higher fee for the same procedure performed in their office than what they'd bill and be paid for that same procedure if done in a facility. The reason is that in the OR, the hospital is responsible for their own costs and is going to bill a separate fee for the use of the facility, whereas in the office the physician is responsible for and needs to be compensated for the use of the office space, the supplies and equipment, staff time, etc.
For self-pay patients, the fee you charge is generally considered a contractual arrangement between the patient and the provider, so it's really up to the provider to what they feel is an appropriate charge. Your provider can decide to discount or not discount their fees as they see fit, though for compliance purposes it should be done in a fair and equitable manner that does not give undue preference to one particular class of patients over another.