Tinnitus is a medical condition that causes noises like ringing, hissing or buzzing in the ears.
An otorhinolaryngologist is a doctor who specializes in the management and treatment of diseases of the ear, nose, throat and related structures of the head and neck.
An audiologist is a professional who evaluates, diagnoses, treats and controls hearing loss and balance disorders.
Remember that for the proper selection of health professional that treats tinnitus you must consider the nature, severity and symptoms you are presenting.