Make Changes

Life moves quickly—make sure your insurance is keeping up. Examples of life event changes include marriage, divorce, birth, adoption, a change in salary or a change of address.

If you signed up through Healthcare.gov

Please call 800-318-2596 or log in at www.healthcare.gov to make changes to your plan.

If you signed up directly with Montana Health CO-OP

You may go to the following link to make your changes https://marketplace.mhc.coop or

Download change form to report your changes::

  • Name change
  • Address change
  • Subscriber or dependent(s) additions/cancellation
  • Billing preference change (email or mail)


Instructions on how to return the Change Form via our secure email portal for your protection:

Our secure email portal may be accessed here:  Email Portal

If you haven’t used the Email Portal before, you will need to register your email address in order to send encrypted emails to Montana Health CO-OP. Click on the “Register” button to begin.

If you have any questions, please call us at 855-447-2900.