UnitedHealthcare Medicare Customer Service Number
Call UnitedHealthcare Medicare
1-800-523-5800TTY: 711
Hours: 8 AM – 8 PM local time, 7 days a week
October 1 – March 31 | Weekdays only April–September
All UnitedHealthcare Medicare phone numbers
AARP Medicare Plans
1-800-523-5800
AARP Medicare Advantage & Supplement
OptumRx Pharmacy
1-800-356-3477
Mail order prescriptions
Medicare Supplement Plans
1-800-523-5800
Medigap plan support
New Member Enrollment
1-844-348-5701
Enroll in a UHC plan
What UnitedHealthcare can help with
- AARP Medicare plan questions
- Claims status and billing inquiries
- Find in-network providers
- Prescription drug coverage and costs
- Prior authorization status
- Benefits and coverage details
- File appeals or grievances
Before you call, have ready:
- Your UnitedHealthcare member ID number
- Your date of birth
- Your Medicare number
- Details about your question or issue
Online options
Frequently asked questions
What's the difference between UHC and AARP Medicare?
AARP Medicare plans are administered by UnitedHealthcare. The AARP name is a brand partnership, but UHC handles all claims, customer service, and coverage.
How do I get my UHC Medicare ID card?
Call 1-800-523-5800 to request a replacement card, or log into your account to print a temporary digital ID card.
Does UnitedHealthcare use OptumRx?
Yes, OptumRx is UnitedHealthcare's pharmacy benefit manager. For prescription questions, you can call OptumRx at 1-800-356-3477.