George Haddad, M.D., P.C. A Patient-Centered Medical Home practice, providing quality medical care to families for over 25 years. George Haddad, M.D. 3800 Delaware Ave Suite 100 Phone: 716-876-3737 Fax: 716-447-0627 Office Hours : Monday 9:00 am - 4:30 pm Tuesday 9:00 am - 4:30 pm Wednesday 9:00 am - 4:30 pm.