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Mail Service Pharmacy

Federal Employee Program members with pharmacy benefits can get prescriptions filled through the CVS/Caremark mail service pharmacy. Learn more on fepblue.org.

Members who have commercial pharmacy benefits with us through Express Scripts® have access to the Mail Service Pharmacy.

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Getting prescriptions by mail can save members time and money

Members taking long-term medications can get their prescriptions filled through the Mail Service Pharmacy (when they have benefits for this service).

You can prescribe up to a 90-day supply for medications purchased through mail. For most members taking Tier 1 & 2 medications, this may save them money because medications purchased through the Mail Service Pharmacy often have a lower copayment. It also improves convenience, because members get the medication delivered to their home or location of choice.

If a member has the Exclusive Home Delivery benefit feature, they are required to fill certain prescriptions by mail.

How to write prescriptions for the Mail Service Pharmacy

Please write prescriptions for a 90-day supply plus refills. The member will need a new prescription, even if previously taking the medication.


  • If you e-prescribe, please transmit the prescription to ESI Mail Order.

Options for the member:

Once the member has a prescription from you, they have several options for submitting the prescription to the Mail Service Pharmacy and should allow 14 days for delivery from the date the order was sent:

  • Web. The member can go directly to the Express Scripts Pharmacy website, www.starthomedelivery.com.
  • Phone. The member can call ESI at 1-877-509-5883 and a representative will assist the member in getting started, including coordinating the prescription request with the member’s prescriber, as needed.
  • Mail. The member can call Member Service (using the number on their ID card) to request a mail service order form (includes postage paid envelope).

Certain controlled substances and other prescribed medications may be subject to dispensing limitations and to the professional judgment of the pharmacist. Opioid prescriptions cannot be filled through the Mail Service Pharmacy.

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