M.E. O’Brien & Sons, Inc. » Directory Go back to directory. Add to Address Book. M.E. O’Brien & Sons, Inc. M.E. O’Brien & Sons, Inc. Contact: Eric O’Brien Work 93 West Street Medfield MA 02052 work Work Phone: 508-359-4200work Work Email: email@example.comINTERNET Website: Visit Website Categories: Manufacturer Representatives Updated 1 year ago.