Quillivant XR (methylphenidate HCI) CII & QuilliChew ER (methylphenidate HCI) CII added: 27-Nov-2019, updated: 8-Sep-2023 | Edit Listing Visit the official Quillivant XR & QuilliChew ER website to find out more information about our treatment option. URL Business addressSosemo 113 Sullivan St, Apt. 2ABF, New York, New York 10012 United States Contact detailsPhone: 4802274625