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Express Scripts Fax Number — Mail-Order Prescriptions and Prior Authorizations

Express Scripts is a pharmacy benefit manager and home-delivery pharmacy, so the correct fax depends on what you are sending — a new mail-order prescription is different from a coverage review. Prescribers fax new prescriptions for home delivery to the Express Scripts Pharmacy, while prior authorizations and formulary exceptions route through the plan's coverage-review team, each with its own dedicated fax printed on the relevant form. Those forms live in the prescriber portal, are attached to the patient's benefit paperwork, or are supplied when you call Express Scripts. Because the destination is chosen by drug and health plan, always read the fax off the specific form rather than reusing an old one.

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Express Scripts Fax Number

Use the fax line listed on the Express Scripts form for your patient's plan

Hours: Express Scripts prior authorization and pharmacy intake teams generally work extended weekday business hours across US time zones; faxes are queued around the clock and reviewed on the next business day.

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What You Can Fax to Express Scripts

  • New prescriptions for home delivery
  • Prior authorization request forms
  • Formulary exception and appeal documents
  • Supporting clinical notes for coverage review
  • Patient enrollment and demographic updates
Tip: Match the fax to the task: a home-delivery prescription and a prior authorization go to different Express Scripts intake lines, both printed on their own forms. This paperwork is protected health information, so a HIPAA-eligible sender such as Send FAX Mail's Business plan ($79.99/month) keeps it compliant and returns a delivery receipt you can file with the case. Include the member ID and date of birth so the request attaches to the right benefit record.

Faxing to Express Scripts — FAQ

No — home-delivery prescriptions route to the Express Scripts Pharmacy intake, while coverage reviews go to the prior authorization team, and each has a separate fax number. Read the number off the specific form you're completing so the document reaches the correct queue.

It's printed on the drug-specific PA form, which prescribers pull from the Express Scripts provider portal or receive when they call about a member's coverage. Since forms differ by medication and plan, grab a current one rather than reusing a saved copy.

Prescribers can fax a new mail-order prescription to the Express Scripts Pharmacy using the intake fax on its order form, subject to the usual controlled-substance rules. Patients themselves generally can't fax their own prescription; it must come from the prescribing office.

A sending service that provides a delivery confirmation documents that the transmission completed, which helps when a decision deadline is running. For status on the review itself, follow up through the Express Scripts member or provider line, since arrival and adjudication are separate steps.

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