Patients should obtain a doctor's note for surgery directly from the specialist who will be performing the procedure. This is because the specialist is the one who will have the most detailed information about the surgery and the patient's specific needs related to it. However, in some cases, the primary care physician may be able to provide a note if they have all the necessary information from the specialist. It's always best to confirm with the specialist and/or primary care physician who will be providing the note to ensure that it contains all the necessary information and meets the requirements of the employer or organization that will be receiving it.