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Find contract information and documentation for agencies or individuals who provide services to King County.

Insurance requirements

Find minimum scope and minimum limits of insurance coverage requirements and documentation.

Credentials requirements

View requirements for all providers contracting with Public Health – Seattle & King County (PHSKC) and health plan enrollment for contracted providers practicing at PHSKC sites.

Equal Employment Opportunity

Learn about federal, state, and local laws regarding discrimination.

HIPAA compliance

Learn about the federal regulations associated with HIPAA compliance.

Register as a supplier

Register using the E-Procurement Supplier Portal.

DocuSign instructions

Learn how to use the electronic signature platform of DocuSign.

W-9 access for new contractors

Download King County Substitute W-9 form (374 KB)

This document is needed to issue checks based on IRS requirements. Provide your address information and taxpayer identification number and sign the certification.