Contact Us: If you have any questions regarding our products or services, please call or email us and we'll get back to you as soon as possible. We look forward to hearing from you. Main Laboratory E/M Associates, Inc. 248-B Main Dunstable Road Nashua, NH 03062 PHONE: (603) 204-5417 E-mail:contact@emassociates.net Billing & Inquiries E/M Associates, Inc. PO Box 2077 Salem, NH 03079 PHONE: (603) 204-5417 E-mail:contact@emassociates.net