How to contact UnitedHealthcare West resources - 2021 UnitedHealthcare Administrative Guide > scroll down to ‘Support and Privacy, Contact Us’> Health Plan Support by State.


Benefit Interpretation Policies: > Commercial Policies>  UnitedHealthcare West Benefit Interpretation Policies

Medical Management Guidelines: > Commercial Policies >

EDI: Transaction 278


Arizona and Colorado Medicare Advantage Phone: 1-800-746-7405

California, Oregon and Washington: SignatureValue, Medicare Advantage, direct contract network and medical group/IPA carve-out

Phone: 1-800-762-8456

Nevada Medicare Advantage Phone: 1-888-1-866-8297

Texas and Oklahoma: Medicare Advantage, SignatureValue Inpatient Notification/Utilization Management

Phone: 1-800-668-8139

To view the most current and complete Advance Notification List, including procedure codes and associated services, go to

CT scans, MRIs, MRAs, PET scans and nuclear medicine studies, including nuclear cardiology

Online:; Go to Prior Authorization and Notification tool.

Phone: 1-866-889-8054

Request prior authorization of radiology services as described in Outpatient radiology notification/prior authorization protocol in Chapter 7: Medical Management.

Diagnostic Catheterization, Electrophysiology Implants, Echocardiogram and Stress CT scans, MRIs, MRAs, PET scans and nuclear medicine studies, including nuclear cardiology

Online:; Go to Prior Authorization and Notification tool.

Phone: 1-866-889-8054

Request prior authorization of radiology services as described in Outpatient radiology notification/prior authorization protocol in Chapter 7: Medical Management.

(Non-delegated) Inpatient includes: Acute Inpatient, Skilled Nursing Admission, Long-Term Acute Care,

Inpatient Rehabilitation Places of Service.

EDI: Transaction 278N


Phone: 1-800-799-5252

Mental Health (Medicare Advantage): 1-800-508-0088


Phone: 1-866-300-7736

Fax: 1-888-361-0502

Encounter Collection, Submission and Controls, including ERA/835 transactions

Password and user ID are not required to review and access EDI information on

Online: > EDI Contact > EDI Transaction Support Form

Phone: 1-800-842-1109 (For UnitedHealthcare West ERA/835 questions, select option 4 and then option 2)


Payer IDs: UnitedHealthcare West encounters, 95958. For claims, the Payer ID is 87726.

For a complete list of Payer IDs, refer to the Payer List for Claims

(SignatureValue and Medicare Advantage Plans only) Have claims payments deposited electronically or make changes to an existing EFT enrollment

Online: > Request Change to Electronic Funds Transfer (EFT) for UnitedHealthcare West > UnitedHealthcare West EFT Enrollment App Overview

Link: UnitedHealthcare West EFT tool on your Link dashboard

Email: with questions about UnitedHealthcare West EFT.

EDI: Transactions 270 (Inquiry) and 271 (Response) through your vendor or clearinghouse



(Follow prompts to access information)

Commercial and Medicare Advantage HMO/ MCO:

  • California: 1-800-542-8789
  • Arizona/Colorado/Nevada: 1-888-1-866-8297
  • Oklahoma/Texas: 1-877-847-2862
  • Oregon: 1-800-920-9202
  • Washington MCO: 1-800-213-7356

(Applies only to Commercial UnitedHealthcare Signature Value HMO/MCO)

California, Oklahoma, Oregon, Texas, Washington


Mailstop CA124-0160
P.O. Box 6107
Cypress, CA 90630


  • California: 1-800-624-8822
  • Oklahoma/Texas: 1-800-825-9355
  • Oregon/Washington: 1-800-932-3004

Fax: 1-866-704-3420

Mailstop CA124-0157
P.O. Box 6106
Cypress, CA 90630

Fax: 1-888-517 7113

(Applies only to Commercial UnitedHealthcare SignatureValue HMO/MCO)

California Oklahoma, Oregon, Texas, Washington

Phone: 1-888-277-4232

Fax: 1-800-346-0930

(medical or pharmacy appeals)

Fax: 1-800-346-0930

Commercial products:

Medicare products: > Our Plans > Medicare Prescription Drug Plans

Phone: 1-800-711-4555

See member’s ID card for carrier information and contact numbers.

View the member’s health care ID when you verify eligibility on

(applies only to commercial products in California)

Online: > UnitedHealthcare Links (scroll to bottom right) > Language Assistance

Phone: 1-800-752-6096

Phone: 1-877-840-4085

Fax completed referral form to: 1-877-406-8212