Call William Gaya, MD PA to request an appointment at our office in Ocala, FL. Call us today at 352-732-7233. NEW PATIENT FORMS ... Patient Portal. Address: 801 SW 1st Ave, Ocala, FL 34471. Email: Brain@GayaNeurology.com. Phone: 352-732-7233. Fax: 352-732-0239. BROWSE OUR WEBSITE. HOME; NEUROLOGICAL SERVICES;.