Yakima Adjustment Service, Inc. Locally owned and operated, we provide debt collection for government and healthcare, as well as services for returned checks and other receivables. We assist all of our customers with respect and professionalism. Client Login Home / About Us / Services / Contact Us Yakima's most experienced collection agency. serving Central Washington since 1947. We recognize that the most important measures of our success is the amount of money we return to our clients. At this we excel. Make a Payment If you have any questions please call Toll-free 1-877-269-8213 or 509-248-0400 Debt Collection Services Courteous/Professional Staff Precollection Letter Service Skip Tracing Services Staff Training for Clients Legal Services Online access Testimonials