To report a workers' compensation injury contact Cristal Arguelles at (915) 434-0480.

YISD Workers’ Compensation Third Party Administrator
For questions regarding general information, disputes, pre-authorization and/or verification of services contact:

Claims Administrative Services (CAS)
Lisa Ramirez, Claims Adjuster
Business (800) 765-2412 ext 1013
Fax (903) 509-1888
lisa.ramirez@cas-services.com

Send YISD workers’ compensation bills and medical records to:

Claims Administrative Services (CAS)
P.O. Box 7500
Tyler, Texas 75711
Business (800) 765-2412
Fax (903) 509-1888

For YISD workers’ compensation questions regarding the status of a medical bill contact:

Claims Administrative Services (CAS)
Attention: Provider Maintenance Specialist