DialClerk Directory

Zenith Insurance (workers compensation)

Claims and claim status

Find claim-status contacts and document destinations. A billing address, appeal address and original-claim address are not interchangeable.

fax claims

Provider bill submission - California (fax and mail)

Official page read
Phone

No phone listed for this route

Fax

877-280-4701

Faxed medical bills and reports (California)

Published hours

Not published in this record

Product, plan and location

workers comp
California

Mailing address
Zenith Insurance Company P.O. Box 9055 Van Nuys, CA 91409-9055

Mailed medical bills, reports and medical correspondence (California)

Fax and P.O. box for submitting medical bills, reports and medically related correspondence on California Zenith workers' compensation claims. Not for claimant or employer questions. Workers' compensation: a claim number and the adjuster or injured-worker identification are usually required; coverage is determined by the claim (not by a member ID), and state fee schedules and rules govern billing.

View source ↗ · Source checked 2026-10-25

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fax claims

Provider bill submission - other states (fax and mail)

Official page read
Phone

No phone listed for this route

Fax

800-364-0443

Faxed medical bills and reports (states other than California)

Published hours

Not published in this record

Product, plan and location

workers comp
National contact — confirm product and location

Mailing address
Zenith Insurance Company P.O. Box 1558 Sarasota, FL 34230-1558

Mailed medical bills, reports and medical correspondence (states other than California)

Fax and P.O. box for submitting medical bills, reports and medically related correspondence on Zenith workers' compensation claims outside California. Not for claimant or employer questions. Workers' compensation: a claim number and the adjuster or injured-worker identification are usually required; coverage is determined by the claim (not by a member ID), and state fee schedules and rules govern billing.

View source ↗ · Source checked 2026-10-25

Report an update

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Call preparation · editorial guide

Make the call count.

Find claim-status contacts and document destinations. A billing address, appeal address and original-claim address are not interchangeable.

Have ready in your secure workspace

  • Claim number, service dates and billed amount
  • Submission acknowledgement and remittance
  • Provider billing identifiers

Questions to resolve

  • Was the claim received and accepted for processing?
  • What specifically prevents payment or final processing?
  • Is a corrected claim, reconsideration or appeal the right route?

This is a general administrative checklist, not payer policy or advice about a particular patient. Confirm the current plan instructions.

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