Alternative Markets

Browse resources to service your existing WC clients insured with our Alternative Markets.

AmTrust Contacts

Customer Services Online or by phone 877-528-7878
Billing: 855-399-1185

A.I.M Contacts

Online at: or by phone (781) 221-1600
Billing: Online Payment, 800-876-2765 or Email inquiries to: [email protected]

Workflow & Agency Services

Certificates of Insurance

Agents can issue a certificate of insurance, but we suggest making sure the policy is in force by calling the automated billing, center before issuing, and noting your file.

  1. AmTrust: 877-528-7878
  2. A.I.M. Mutual: 800-876-2765

After issuing the certificate, you are required to send a copy to: Number One Insurance Agency, Inc via email to [email protected] or by fax to 508-634-2930. We will forward this certificate on to the carrier.

Direct the following inquiries to Number One for processing to Michelle St. Angelo at [email protected] or by fax to (508) 634-2930.


  • CancellationSubmit LPR with insured’s signature, reason, and cancellation date.
  • Reinstatement Requests - Must be submitted on insured’s letterhead, list the policy number, cancellation date and statement of no losses between the date of cancellation through the current date, with the insured’s signature, title, and date. We will respond with underwriting’s response and conditions, if required.
  • Loss Run Request
  • Audit Disputes – Forward to the carrier’s audit department all copies of the 941’s issued throughout the policy term and a letter from the insured asking for a review of the audit. If the insured needs assistance contacting the auditor, please contact Michelle St. Angelo.
  • Broker of Record Requests – Must be submitted on insured’s letterhead and include the policy number, effective date, a request naming BOTH Number One Insurance and your agency as the Broker of Record and the insured’s name, signature, and title.

Program Manager

Michelle St. Angelo