If you need to submit an out-of-network medical claim, or you have received a letter requesting information to verify provider billing, you can start the process of registering your tax ID number (TIN) now.
Be sure to have a PDF version of your W-9 tax form and documentation to prove your primary practice location address.
Once you have completed steps 1 and 2, register for the portal to:
To check the status of a TIN you've already registered, you can view your application any time.
You have 2 options for receiving payments from UnitedHealthcare. Both are facilitated by Optum Pay, a full-service payment and remittance solution used by all sizes and types of health care organizations. Learn more
Get the steps you need to register your TIN in our guide.
For additional help, please contact UnitedHealthcare at 844-368-5890, 8 a.m.–5 p.m. CT, Monday–Friday.