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OptumRx Fax Number — Prior Authorizations and Home-Delivery Prescriptions

OptumRx is the pharmacy benefit manager and mail-service pharmacy within Optum, and it routes faxes by purpose rather than through one master line. A prescriber sending a home-delivery prescription uses the mail-order intake fax, while a prior authorization or coverage exception goes to the clinical review team on a fax that changes with the medication and the member's plan. Those numbers are published on the drug-specific forms in the OptumRx provider portal and are also handled through electronic tools like CoverMyMeds. Read the fax off the exact form in front of you, because a number for one plan or drug won't necessarily reach the reviewer for another.

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OptumRx Fax Number

Take the fax number from the OptumRx form matching your drug and plan

Hours: OptumRx clinical review and pharmacy intake teams operate extended weekday hours across US time zones, with some urgent lines available longer; faxes sent after hours are reviewed the following business day.

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What You Can Fax to OptumRx

  • Home-delivery (mail-service) prescriptions
  • Prior authorization request forms
  • Coverage exception and appeal paperwork
  • Chart notes supporting medical necessity
  • Member demographic or benefit corrections
Tip: Pull a fresh drug-and-plan-specific form each time, since OptumRx prior authorization fax lines are tied to the medication and coverage rather than to a single department. Because you're transmitting protected health information, use a HIPAA-eligible service like Send FAX Mail's Business plan ($79.99/month) and retain the delivery receipt with the authorization request. Put the member ID and date of birth on the form so it matches the right benefit file.

Faxing to OptumRx — FAQ

No single number covers mail-order prescriptions, prior authorizations, and appeals — each function has its own intake, and prior authorization fax lines vary by drug and by health plan. Always take the number from the specific form you're submitting.

OptumRx accepts prior authorizations through electronic portals such as CoverMyMeds as well as by fax on the drug-specific form. Electronic submission is often faster to acknowledge, but fax remains available when your workflow relies on it.

Yes, a prescribing office can fax a new prescription to the OptumRx mail-service pharmacy using the intake fax on its order form, with controlled substances following their separate legal path. The request has to originate from the prescriber, not the patient.

Complete every required field on the form, including the member ID, date of birth, diagnosis, and the prescriber's signature and contact number. Missing clinical justification or an unsigned form is a common reason a coverage request stalls or bounces back for more information.

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