We make it easy for you to get connected to the right person.  Whether you’re a provider looking for information or an employee looking for a status, you can find the information you need in the sections below.

Medical Billing and Claims Correspondence Address for:

CA, CO, CT, GA, MA, MN, NJ, NY, PA, VA

Please mail all claims correspondence, medical bills and accompanying medical reports to:

Email: wcmedical@onebeacon.com
Fax: 888.364.6002
OneBeacon Insurance Group
Attn: Workers Comp Claims
188 Inverness Drive West
Suite 600
Englewood, CO 80112

Medical Billing and Claims Correspondence Address for:

All Other States

Please mail all claims correspondence, medical bills and accompanying medical reports to:

Gallagher Bassett Services, Inc.
PO Box 2831
Clinton, IA 52733-2831
State of Nevada - Medical Bills
Gallagher Bassett
PO Box 400970
Las Vegas, NV 89140

All other correspondence should be sent directly to the adjuster.

Billing Questions and Inquiries

Claims Call Center
800.203.9600
877.248.3455