A message from Blue Cross Blue Shield of Massachusetts:

Your employees’ access to health care is our top priority, so we’re reaching out to share important information with you about our network. Our records show that you have employees who have used Mount Sinai Health in New York in the past. Mount Sinai Health has notified us that they plan to leave the Blue Cross Blue Shield network, which would be effective on January 1, 2026 for professional providers, and on March 1, 2026 for facilities due to the NY State Law: 60-Day Cooling-Off period. If this happens, they will be considered out-of-network. We’re actively negotiating with Mount Sinai Health and hope to reach an agreement. If we do, we’ll send you another email to let you know that they will stay in our network.

We’re committed to supporting your affected employees and ensuring that they continue to have access to high-quality, affordable care. We’ll be communicating with your employees who have used Mount Sinai Health in the past to inform them about the change and let them know what their options are, going forward. You can view the letter here.

We’re disappointed that Mount Sinai Health may be leaving our network, but we’ll continue to negotiate for affordable health care for our members and accounts. If you have any questions, please contact your account executive.

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