Depending on the type of lip problem or condition, different types of doctors that someone can see is a primary care physician, plastic surgeon or an ear, nose and throat specialist. For conditions, such as fever blisters, canker sores, lip cancer and cheilitis, a patient can go to his or her primary care physician who can diagnose and recommend the proper treatment options, notes WebMD.
However, lip cancer that involves squamous cell carcinoma can require that a primary care doctor refer his or her patient to a specialist or surgeon for excision of the cancer. Radiation treatments may also be necessary in cases where surgery is not a good option for a patient, states Skinsight.
Another type of lip condition is a cleft lip and palate, which is a congenital defect where a baby's lip does not form properly during pregnancy. This condition is often seen in small children. An ENT specialist or otolaryngologist and a surgeon are the type of doctors who treat and correct these medical problems, relates WebMD.