Reporting A Claim

AmTrust’s professional claims staff has an average of 20+ years of experience, and our claims adjusters maintain low workloads, enabling them to effectively manage claims.  We use an automated claims system and operate in a paperless environment.

Three-point contact is immediately initiated with the injured worker, employer and doctor.  Our Medical Director assists in determining proper diagnoses, provides access to treating physicians and holds peer-to-peer reviews to discuss claims directly with physicians.

24/7 Toll-Free Claim Reporting

Workers’ Compensation for All States

Phone: 866.272.9267
Fax: 775.908.3724 or 877.669.9140

Other than Workers’ Compensation

Phone: 866.272.9267
Fax: 877.207.3961

Provider Instructions for Workers' Compensation eBilling

Payor ID: 12491

Name of Clearning House: Optum Property and Casualty Clearinghouse (OPCC)

Identification number: OPCC's Tax ID: 352170347

To obtain a claim number, please call: 1.877.528.7878

How the Provider Should Submit the Claim #:  If the subscriber is the patient, the claim # should be sent in a 2010BA.REF*Y4 segment in X12 837 transactions;  otherwise, if the patient is different than the subscriber, the claim # should be sent in a 2010CA.REF*Y4 segment.  For example, REF*Y4*CLAIMNUMBER~.  Our “OPCC Companion Document” explains the most about how to use our system;  it can be found at   Our “OPCC Connectivity Guide” is also helpful, available on the same web page.

Providers/bill submitters can call our OPCC Customer Support at 877-234-0449, or email

Information required for all claims reported 

  1. Name of the insured and policy number 
  2. Date, Time & Place of Accident 
  3. Description of accident or incident 
  4. Name, phone and/or e-mail of person making the report

Additional information required for specific claim types 

For Workers’ Compensation 

  1. MUST have the injured employee’s social security number as it is required by law 
  2. Description of injury 

For Property Claims 

  1. Physical address of the loss 
  2. If more than one building on property must have specific building(s) involved 
  3. Type of loss, i.e., Fire, Theft, etc. 
  4. Description of loss or damage 

For Motor Vehicle (Auto) Claims 

  1. Name, address and contact information of ALL parties involved. 
  2. Make, model and VIN of the insured vehicle 
  3. Make, model of all other vehicles involved 
  4. Current location of all vehicles 
  5. Name and contact information for each driver and all passengers 
  6. Name and contact information any known witnesses 

For General Liability Claims 

  1. Physical address of where the loss occurred 
  2. Name, address and contact information for all persons claiming injury or damage 
  3. Name and contact information any known witnesses  

Customer Benefits

  • 24/7 centralized call center staffed by special claims operators who provide assistance for reporting claims, allowing claimants, policyholders and producers to speak with a live person
  • Injured employees, medical providers and others are paid without delay
  • Return-to-work options are initiated through a joint effort among the employer, physician and injured employee
  • Each business segment is supported by a senior position with a high level of experience
  • Preferred One Source Repair Program streamlines claims handling for automobile repairs through quality, authorized collision repair facilities across the country

Disability Claims

Send a completed claim form for NY and NJ to: 

Wesco Insurance Company
PO Box 980, Bowling Green Station
New York, NY 10274 OR
FAX: (800) 584-9303 OR

Questions: 800.535.2710
NY and NJ Claim Forms