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The Navitus MedicareRx plan covers Medicare eligible Retirees, their Medicare eligible spouse/domestic partner, and Medicare eligible child(ren). 

Prescription Drug Program Information

Navitus MedicareRx Evidence of Coverage (EOC) - This booklet gives you details about your Medicare prescription drug coverage.

Navitus MedicareRx Summary of Benefits (SOB) - This booklet explains some of the features of the State Plan, it doesn’t list every drug we cover, or every limitation or exclusion.  To get a complete list of your benefits, please contact the Navitus Medicare Rx Customer Care, 1-866-270-3877 or TTY users please call 711.

Big Sky Rx Program - Big Sky Rx (BSRx) is dedicated to helping Medicare clients pay for Medicare approved prescription drug insurance premiums.

Benefit Structure

Click here for benefit structure and copay/coinsurance information. 

Network Pharmacies

For a full list of participating pharmacies, visit Navitus MedicareRx and register, or contact Navitus MedicareRx Customer Care at 866-270-3877. 


The Formulary tells you which prescriptions are covered and which tier a covered prescription falls under. To view your formulary, visit Navitus MedicareRx and register, or contact Navitus MedicareRx Customer Care at 866-270-3877.  

Navitus MedicareRx Customer Care

Hours: 24 Hours per Day  l  7 Days per Week
866-270-3877 (toll-free)
TTY (toll-free) 711
Mailing Address: 
Navitus Medicare Rx Customer Care
P.O. Box 1039
Appleton, WI  54912-1039
Website: https://medicarerx.navitus.com/