Doctors can provide patients answers to medical questions over the phone, but the office receptionist or nurse usually handles responses, according to the National Institute of Health. Patients can leave a message or relay questions to another staff member if the doctor is not available.
Patients are recommended to call their primary care physician if another doctor prescribes medication, states the National Institute of Health. It is also ideal to call a doctor prior to taking over-the-counter medication. Patients may also call the doctor's office if medical instructions are unclear after a medical visit. Most doctors are also able to communicate with patients and answer questions by e-mail.