Effective September 20, 2025, the Office of Workers’ Compensation Programs (OWCP) will require all providers to include both the billing National Provider Identifier (NPI) and taxonomy code when submitting bills for services provided to OWCP ill and injured workers. Providers must ensure that the submitted NPI and taxonomy match the information listed in their OWCP provider file.

Additionally, group practices must include servicing or rendering provider NPI and taxonomy when billing a professional claim. The submitted servicing or rendering NPI and taxonomy must be associated with an active servicing provider in the OWCP provider file.

Bills with mismatched or missing data may be delayed or denied.

For billing assistance, use the resources below to ensure NPI and taxonomy details are entered in the correct fields on the billing claim form.

• Online (Direct Data Entry DDE): Refer to the Enter Bills Online Tutorial for instructions and examples.
• Electronic Data Interchange (EDI): Refer to the 837 Companion Guide for more details.
• Paper: Refer to the Health Insurance Claim Form (OWCP-1500) or the Uniform Health Insurance Claim Form (OWCP-04) instructions for more information.

To prevent delays and denials, providers are encouraged to verify their NPI and taxonomy information prior to submitting bills by accessing the Workers’ Compensation Medical Bill Processing (WCMBP) portal at https://owcpmed.dol.gov/. Providers needing assistance with online access may contact our call center at the phone numbers listed below.

Providers needing to update existing information or add new details may do so either electronically or by submitting a paper form by mail or fax.

• Online: Providers are encouraged to use the WCMBP portal OWCP Medical Bill Processing Portal (https://owcpmed.dol.gov) to review and update servicing provider NPI information. In addition, providers can review and confirm existing provider record information such as license information, contact information, and payment details. Instructions are available at: Updating Provider Information Resource Guide.
  Registration is required for WCMBP portal access. Providers can refer to the Provider Registration for Online Access (Updated 02/05/25) quick reference guide for more information. 
• Mail: Providers can mail the updated Provider Enrollment Application (OWCP-1168) to the following address: 
  Provider Enrollment 
  Department of Labor - OWCP 
  P. O. Box 8312 
  London, KY 40742-8312 
• Fax: Updated Provider Enrollment Application (OWCP-1168) information may also be sent by fax to 888-444-5335.  

For questions, contact our Call Center at the applicable phone number listed below, where a representative will be happy to assist.

• Division of Coal Mine Workers' Compensation (DCMWC):
  1-800-638-7072
• Division of Energy Employees Occupational Illness Compensation (DEEOIC):
  1-866-272-2682
• Division of Federal Employees' Compensation (DFEC):
  1-844-493-1966