NRC Customer Service Center
800.747.3342
8:00am to 5:30pm CT, Monday - Thursday
8:00am to 5:00pm CT, Friday
Office Locations
Corporate Office
445 W Erie Street
Suite 210
Chicago, IL 60654
312.278.6800 phone
Scottsdale Office
8601 N Scottsdale Road
Suite 140
Scottsdale, AZ 85253
480.374.1420 phone
480.374.1430 fax