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Service Center: Claims

Service Center > Claims

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We are your best partner, on your worst day.

As specialists in commercial transportation insurance, National Interstate claim professionals aggressively adjust hundreds of millions of dollars in claims each year. On every claim, for every customer, we work tirelessly to achieve fair, equitable and cost-effective resolutions.

From a minor fender-bender to a catastrophic loss, our experts will provide a superior level of service. Our teams are organized by specialty and severity to ensure that your claim is handled by a professional who understands your industry, no matter the complexity. We understand claims can be stressful, and our goal is to make the process as smooth as possible.

We are here when you need us, 24/7, 365 days a year.

Regulatory Changes

California Senate Bill 1159 (SB1159) Effective 9/17/2020

SB1159 creates a rebuttable presumption for COVID-19 cases under specific circumstances and also requires employers to report ALL employee COVID-19 illnesses. Click here to read a summary of the bill.

COVID-19 form for cases from July 6,2020 to prior to the effective date of SB1159. (9/17/20)

COVID-19 form for cases on or after the effective date of SB1159. (9/17/20)

How to Report a Claim:

Call: 800-929-0870
Fax: 330-659-8909

In Hawaii or Alaska:

Call: 808-536-3366 or 800-316-9167
Fax: 808-536-2467

Report Online

For Catastrophic Claims:

Please call 800-929-0870, 24-hours a day, seven days a week. Catastrophic claims must be reported via telephone call, and this phone number is staffed around-the-clock by our rapid response team, including our veteran specialists and extended network of experts.

4 Steps to a Stress-Free Claim Experience

  1. Report the claim immediately!
  2. Gather as much information as possible before our claims professional contacts you.
  3. Communicate anything and everything relevant to the claim to our claims professional
  4. Relax. We'll take it from here.

Electronic Billing Information for Workers’ Compensation Claims

Medical providers can submit bills directly through our electronic billing system. WCEDI. For more information, contact Careworks at 877-659-0952 or


In accordance with 12 NYCRR §300.26 you have the right to receive Workers’ Compensation benefits by direct deposit or mail. Benefits will automatically be delivered by U.S. Mail unless you elect direct deposit. To enroll in direct deposit download and complete the direct deposit form and email, mail or fax your request to:


National Interstate Insurance
P.O. Box 521
Richfield, OH 44286

Fax: 330-659-8909

NY NIIC Direct Deposit Form.