Medicare · Prior Authorization · Appeals · Part D
Fax Medicare Online
With Certified Proof
Never miss an appeal deadline. Get a SHA-256 certified receipt proving your prior auth or appeal arrived — before the deadline closes.
From $0.60 with credits · $1.29 pay-as-you-go · No account needed
Medicare · Prior Authorization · Appeals · Part D
Fax Medicare Online
With Certified Proof
Medicare appeal deadlines are strict — miss them and you forfeit your right to appeal. Send prior authorization requests, appeal letters, and medical documentation from your browser and get a tamper-evident receipt proving exactly when the plan received your documents.
Fax Medicare now
Certified receipt · No account required
📠 Fax Medicare Document →✍️ Sign & Fax Medicare Form✓ Certified SHA-256 receipt — tamper-evident proof of submission
✓ Verifiable at faxseal.com/verify — permanent record
✓ No account or subscription required
✓ From $0.60/fax with credits · $1.29 pay-as-you-go
✓ Files deleted within 24 hours
✓ Stripe-secured checkout
Medicare fax numbers vary by plan and region. For Medicare Advantage, use the prior authorization fax number on the back of your member card. For traditional Medicare, contact your Medicare Administrative Contractor (MAC). Always call to confirm before faxing.
What to fax to Medicare
Common documents sent to Medicare plans, Medicare Advantage carriers, and Part D insurers
Prior authorization requests
Submit pre-auth requests for procedures, medications, and durable medical equipment with certified proof of the submission date.
Coverage appeals (Level 1 & 2)
Fax appeal letters and supporting medical documentation before the appeal deadline with tamper-evident delivery proof.
Medical necessity letters
Send physician letters, clinical notes, and diagnostic results supporting a prior authorization or appeal.
Part D formulary exception requests
Submit requests for non-formulary medications with certified proof of timely filing.
Medicare Advantage plan documents
Fax enrollment forms, coordination of benefits paperwork, and plan dispute correspondence.
Redetermination requests
Submit formal redetermination requests after a coverage denial with a dated delivery record.
How it works
Upload your PDF
Prior auth form, appeal letter, or medical documentation. Up to 20MB.
Enter the Medicare fax number
Use the number on your Medicare card, the authorization form, or your plan's website.
Pay & transmit
From $0.60 with credits · $1.29 pay-as-you-go. Card only charged on confirmed delivery.
Get certified receipt
SHA-256 receipt emailed instantly. Proves the exact date your documents reached the plan.
Upload your PDF
Prior auth form, appeal letter, or medical documentation. Up to 20MB.
Enter the Medicare fax number
Use the number on your Medicare card, the authorization form, or your plan's website.
Pay & transmit
From $0.60 with credits · $1.29 pay-as-you-go. Card only charged on confirmed delivery.
Get certified receipt
SHA-256 receipt emailed instantly. Proves the exact date your documents reached the plan.
Medical office handling prior authorizations for multiple patients?
FaxSeal credits never expire — buy a bundle for your practice and use across all patients. Each prior auth or appeal gets its own certified receipt, creating a per-patient audit trail.
Frequently asked questions
Why does the submission date matter for Medicare appeals?
Medicare and Medicare Advantage plans have strict appeal deadlines — typically 60 days from a denial notice. Missing the deadline can forfeit your right to appeal entirely. A SHA-256 certified receipt proves the exact date your appeal arrived, not just the date you sent it.
Where do I find the Medicare prior authorization fax number?
For Medicare Advantage: the fax number is on the back of your member ID card or on the prior authorization request form your doctor received. For traditional Medicare: contact your Medicare Administrative Contractor (MAC) — find yours at cms.gov. For Part D: use the fax number on the formulary exception form from your drug plan.
What is a SHA-256 certified receipt?
When your fax is delivered, FaxSeal generates a receipt with the SHA-256 cryptographic hash of your exact document, the fax number dialed, and the confirmed delivery timestamp. The hash permanently ties the receipt to that specific file — verifiable by anyone at faxseal.com/verify.
Can my doctor's office send prior authorization faxes this way?
Yes. Medical offices can use FaxSeal credits to send prior auth requests for multiple patients. Credits never expire — buy a bundle and use across all your patients. Each fax gets its own certified receipt for the patient's record.
What if the fax fails to deliver?
You are never charged for an undelivered fax. The card authorization is released immediately. If near a deadline, retry immediately and consider calling the plan directly to confirm receipt.
Can I sign and fax a Medicare form in one step?
Yes. Use the Sign & Fax tool — draw your signature, place it on the form, and fax directly from the same screen. No printing, no scanning required.
Never miss a Medicare deadline
Certified SHA-256 receipt · From $0.60 with credits · $1.29 pay-as-you-go.