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Contact Us

Granite Alliance understands that there are times when members have questions or concerns about their prescription drug coverage. In order for us to resolve your concerns quickly, please call Granite Alliance directly.

Medicare beneficiaries, members, pharmacists and physicians may contact us by one of the methods listed below.

Call Us

(TTY users call 711)

We are available 24 hours a day, 7 days a week.

Write Us

Granite Alliance
P.O. Box 1382
Maryland Heights, MO 63043

Fax Us


Email Us

Call Medicare

1-800-MEDICARE (1-800-633-4227)
TTY: 1-877-486-2048
Hours of Operation 24 hours a day, 7 days a week.

Report Potential Fraud, Waste or Abuse

By Phone


By Email

Report Suspicious, Illegal, or Unethical Activity

By calling Magellan’s Compliance Hotline – 1-800-915-2108

Available 24 hours per day, 7 days a week. All calls will be treated confidentially.

When calling, you may choose to remain anonymous, as an outside vendor manages the incoming calls.


Website content was last updated on 1/20/2021.

Granite Alliance Insurance Company is a Medicare-approved Prescription Drug Plan. Enrollment in Granite Alliance depends on contract renewal.

View our Non-Discrimination Notice.