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Fax numbers

UnitedHealthcare

Find UnitedHealthcare fax numbers for Medicare appeals and California grievances, with department-specific instructions and official sources.

InsuranceUnited StatesLast reviewed

California medical grievance — standard

Grievances for UnitedHealthcare Benefits Plan of California.

California medical grievance — expedited

Grievances for UnitedHealthcare Benefits Plan of California.

California pharmacy grievance — standard

Grievances for UnitedHealthcare Benefits Plan of California.

California pharmacy grievance — expedited

Grievances for UnitedHealthcare Benefits Plan of California.

Medicare Part D — standard appeals and grievances

Toll-free

Standard prescription-drug appeal or grievance documents.

Medicare Part D — expedited appeals and grievances

Toll-free

Expedited prescription-drug appeal or grievance documents.

Medicare medical — expedited appeals and grievances

Toll-free

Expedited medical-care appeal or grievance documents.

Dual Complete — Part D coverage determinations

Toll-free

Prescription-drug coverage decisions and exceptions.

Dual Complete — Part C coverage decisions

Medical-care organization determination requests.

Which UnitedHealthcare fax number should I use?

Match the plan, benefit type and urgency. California Benefits Plan grievances and Medicare appeals use different processing teams. Always check the denial letter and current plan booklet.

What to include in your fax to UnitedHealthcare

Include the member and claim reference, denial or grievance details, supporting evidence and representative authorization when applicable. Follow the plan’s deadline and expedited-review criteria.

Check the destination and prepare your cover page

Identify the receiving department, document type, sender, callback number and page count. Put account or patient identifiers only where the receiving form requires them.

Open the official source above and check the current instructions. A reviewed source confirms a published number, not live availability. Toll-free numbers can still incur sending-service or international charges.

Confirm delivery and follow up with UnitedHealthcare

Keep the transmission result and a copy of the documents. Confirm with the receiving department that the packet is complete and can be processed; a delivery receipt does not establish acceptance or a decision. These are fax destinations, not voice support lines. Check with UnitedHealthcare before sending a duplicate.

How to fax UnitedHealthcare without a fax machine

Prepare a legible PDF, confirm the department and number, and review all pages before authorizing the fax. With DearFax, you can send online or prepare a workflow through ChatGPT, Codex and MCP. Save the transmission result with your records.

Frequently asked questions

UnitedHealthcare fax questions