Attest Health Care Advisors is dedicated to serving the non-financial audit and consulting needs of health care organizations nationally, including health plans, pharmacy benefit managers (PBMs), hospital systems, and provider groups. Attest has a demonstrated track record of completing thousands of engagements on-time and on-budget. We are so confident of our performance that we routinely contract on a fixed fee basis. Since 1997, we have not missed the filing deadline on a single audit.

Attest is the largest organization licensed by the National Committee for Quality Assurance (NCQA) to conduct Healthcare Effectiveness Data and Information Set (HEDIS®) Audits™. We have the largest number of Certified HEDIS Compliance Auditors (CHCA’s) and over 50% market share.

From the beginning of the CMS Data Validation Audit requirement in 2011, Attest had been at the forefront of providing this Medicare regulatory audit. In 2014, we completed the Medicare Data Validation Audit for approximately one-third of Medicare contracts making us the largest single firm performing them.

Attest is positioned to perform Risk Adjustment Data Validation (RADV) Audits for commercial insurers. Our goal is to make your RADV audit as smooth as possible by leveraging our medical expertise and superb client service.

Attest also leverages our breadth of expertise to work on organization-specific consulting engagements. Our subject matter experts can meet a wide range of needs, with recent projects including validation of an organization’s internal quality programs and working with two health policy organizations on validation of new measures.


Our Mission

Attest will be the provider of choice for health plans seeking non-financial auditing or consulting services.


Attest began as the health care payer consulting division of a big five accounting firm in 1997. Our service offerings included regulatory, financial and operational advice for health insurers. Attest was divested due to Sarbanes-Oxley regulations in 2006 and has no related entities or parent organization. Attest is now an independent, privately held limited liability corporation serving the needs of over 80 health insurers and many provider organizations.

Attest has been dedicated to auditing and consulting with health plans, provider organizations and pharmacy benefit managers (PBMs) for well over a decade.