Arlington, Va. — The American Chiropractic Association (ACA) is joining more than 170 healthcare groups in support of a national study to collect data that will be used to accurately determine physician practice expenses. Information collected through the Physician Practice Information (PPI) Survey will help policymakers to better understand the costs associated with modern physician practices and to support physician payment advocacy. In addition, ACA is contracting with Mathematica to field the Clinician Practice Information (CPI) Survey on behalf of the chiropractic profession alongside nine other non-MD/DO healthcare organizations. About the American Chiropractic AssociationThe American Chiropractic Association (ACA) is the largest professional chiropractic organization in the United States. ACA attracts the most principled and accomplished chiropractors, who understand that it takes more to be called an ACA chiropractor.