Allan T. Nassar, M.D. Allan T. Nassar, M.D. Listed in Internal Medicine - Listings 1111 W. 4th St.Madera, California 93637 559-662-2700 Claim Listing Flag Listing Overview Map & Directions Contact/Other Phone 559-662-2700Listing Category Internal Medicine - Listings Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?