Waterfall Revenue Group (formerly A-1 Collection Service) has consistently proven its ability to collect some of our most difficult accounts. I consider your recovery rate to be excellent. Aside from your ability to collect, I am also pleased with the outstanding customer service which you provide.
— Medical Center

Helping people resolve their accounts responsibly.

We focus on investing in our team of Top Achievers, because we know that when they grow, they’re better able to break through obstacles that interrupt your cash flow.

You can be confident in trusting your reputation to us.

Our collection team and support staff are courteous and professional, well versed in all current debt resolution laws, including the Fair Debt Collection Practices Act, (FDCPA), Consumer Financial Protection Bureau (CFPB), Fair Credit Reporting Act (FCRA), Health Insurance Portability and Accountability Act (HIPAA), Gramm-Leach-Bliley Act (GLBA), Payment Card Industry Security Standards Council (PCI SSC), and the Uniform Commercial Code (UCC).

Our collection specialists, including our bi-lingual collectors, are among the 5% national grouping of collectors certified through ACA International. 

Ethical collection practices are the cornerstone of our services, and we work with consumer financial protection agencies in order to demonstrate compliance or otherwise resolve issues on a timely basis.

We are active members of ACA International and regularly participate in their educational, professional development, and networking opportunities. 


Returning profits to maximize your reinvestment opportunities.

We know that when we help you grow your bottom line, you can reinvest in what you do best. Our strategies are designed to meet your needs and outperform industry standards, through every step of the process.

  • Medical debt resolution services

  • Consumer collection services

  • Commercial collection services

  • Litigation services

  • Pre-collect services

Effective, ethical strategies are – and have always been – at the heart of everything we do. In 2006 we earned our Professional Practices Management System through the ACA, a certification awarded to only 75 out of 3,300 collection agencies in the country. We made and continue to make this investment so you benefit from our on-going quality assurance including documented compliance and disaster recovery.


Valuing the importance of team.

We work together in helping you manage your changing landscape. Learn why we’ve earned our reputation as the “go to” agency for:

  • A connected, collaborative relationship, listening to understand your goals and sharing our expertise to help you achieve them.

  • Responsive service to your inquiries.

  • Becoming an extension of your business office, helping you recover debt while maintaining relationships with your customers, patients, and other stakeholders.