Colorado: Direct lines make prior authorizations faster, easier

Last modified: May 11, 2021

Dedicated prior authorization call center numbers available

OptumCare now has 2 dedicated prior authorization clinical call center numbers for Colorado:

  • Denver/North: 303-716-8040
  • Colorado Springs/South: 719-463-5581

These direct lines will help you get prior authorization answers faster to better serve UnitedHealthcare American Association of Retired Persons (AARP®) Medicare Advantage (HMO) patients in these service areas.

Member cards will be updated

All Optum ID AARP cards will be updated with the new phone numbers in 2021. Until then, you will see both new and old Optum ID cards, and all existing phone numbers will connect you with the Optum Prior Authorization team.

Submit prior authorizations the same as always

The process to submit Optum prior authorization requests remains the same. Please continue to submit requests online at

In the event online submissions are not possible, you can submit prior authorizations via both dedicated phone numbers.


Contact OptumCare, toll-free, at 877-370-2845, option 2, 7 a.m.–9 p.m. CT, Monday–Friday.