Ear, Nose and Throat Associates of Butler, PA, have been in business over 30 years and are located at 104 Technology Dr, Suite 102, in Butler, PA. Drs. C. Thomas Yost and Keith B. Welker are on staff to take care of all of your needs.They provide the following servicesï Ear, Nose and Throatï Head and Neck Surgeryï Inhalant Allergyï Audiology and Hearing Aidsï Balance Disordersï Ear Diseaseï Hearing impairmentï Naso-sinus disorders and surgeryï Environmental allergyï Voice and swallowing disordersï Snoring and sleep apnea surgeryï Tonsil and Adenoid surgeryï Thyroid surgerybrCall today 724-482-0028.