Other Topics

What is a Medicare Accountable Care Organization? Can I enroll in one when I sign up for Medicare or during the Medicare Open Enrollment period?

Medicare Accountable Care Organization (ACOs) are groups of doctors, hospitals, and other health care providers who voluntarily form partnerships to have collective responsibility for the quality and total cost of care delivered to their patients. ACOs are not health plans and you cannot “enroll” in them. Medicare may assign you to an ACO if your primary care doctor is in one, but you are still free to seek services from any Medicare provider inside or outside of the ACO. If you want Medicare to assign you to an ACO based on a certain doctor, you can enter his or her name through your account information on the Medicare website. For more information about ACOs, see the Accountable Care Organization page on the Medicare.gov website.


While we have made every effort to provide accurate information in these FAQs, people should contact the health insurance Marketplace or Medicaid agency in their state for guidance on their specific circumstances.

KFF Headquarters: 185 Berry St., Suite 2000, San Francisco, CA 94107 | Phone 650-854-9400
Washington Offices and Barbara Jordan Conference Center: 1330 G Street, NW, Washington, DC 20005 | Phone 202-347-5270

www.kff.org | Email Alerts: kff.org/email | facebook.com/KFF | twitter.com/kff

The independent source for health policy research, polling, and news, KFF is a nonprofit organization based in San Francisco, California.