MedicaidAdministrativeHigh impact
Tufts Health One Care: Reminder on new member ID cards in 2026
Harvard Pilgrim Health Care·Reimbursement
Effective date
Jan 1, 2026
We identified it
Jun 20, 2026
Summary
Tufts Health One Care transitioned to a Dual Eligible Special Needs Plan (D-SNP) on January 1, 2026, requiring all members to receive new ID numbers and cards. Billing teams must update their systems with the new member ID numbers to prevent claim denials for services delivered in 2026.
Action Required
Immediately: Billing team must update billing systems with new Tufts Health One Care member ID numbers for 2026. Use the secure provider portal to look up updated member ID numbers. New ID numbers are formatted like Tufts Health Plan senior products without '01' suffix. Claims submitted with old ID numbers for 2026 services will be denied and require resubmission with correct member ID.