AACOMAS Application Instructions

Access the AACOMAS Applicant Help Center

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Contact AACOMAS Customer Service

For help with application-related questions, contact AACOMAS Customer Service at 617-612-2889 or aacomasinfo@liaisoncas.com. Note the following:

  • Hours of operation: Monday–Friday, 9am–5pm ET.
  • We typically provide responses to emails within 2 business days; however, response times can take up to 3 business days when we’re at our busiest.
  • Be sure to have your CAS ID # (located under your name in the upper-right corner of the application) when contacting AACOMAS via phone or email. 

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