Contact a Program Directly
You may contact the plans with the phone numbers listed below or view the website (linked below) for additional contact information, including mailing addresses.
Medical Assistance Customer Service Center
Webform: This is a secure online form for provider and client: billing/claim questions, Service Card requests, Apple Health (Medicaid) health plan enrollments, benefit questions.
Email: This is not a secure communication and should not include any personal health information. Please include a Services Card number for identification purposes and faster service.
Dial 711 for the Washington Relay service.
Health Care Authority Addresses
Please see the program-specific websites linked above for mailing addresses.
Street address (please do not mail/ship to this address)
626 8th Avenue SE
Olympia, WA 98501
Getting to the Health Care Authority
The Health Care Authority building is called Cherry Street Plaza, located at 626 8th Avenue in downtown Olympia.
From I-5 Southbound
Take Exit 105B and merge onto Plum Street. Turn left at 8th Avenue. Go two blocks. Cherry Street Plaza is on your right (between Chestnut and Cherry).
From I-5 Northbound
Take the exit toward State Capitol/City Center. Merge onto 14th Avenue SE. At the traffic circle, take the first exit onto Jefferson Street SE. Turn right onto 8th Avenue SE. Go one block. Cherry Street Plaza will be on the left.
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Washington State Health Care Authority
626 8th Avenue SE
P.O. Box 45502
Olympia, WA 98504-5502
Dorothy Frost Teeter, Director
MaryAnne Lindeblad, Medicaid Director
Tamarra Paradee, Executive Secretary
HCA Employment and Verification Information
P.O. Box 42698
Olympia WA 98504-2698
360-725-1938 or fax 360-586-0040 (confidential for sending signed releases)
View Current Openings
Public Records Requests
PO Box 42700
Olympia, WA 98504-2700
360-725-1911 or Fax 360-586-9080
360-725-1649 or fax 360-586-9551
Verification of Employment
Confidential Fax 360-586-0040
Website or Health Care Authority Information
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