UnitedHealthcare Medicare Customer Service Number
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Call UnitedHealthcare Medicare Now
1-800-523-5800
TTY: 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 this information 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.