The Centers for Medicare and Medicaid Services is the official source of information about Medicare enrollment for individuals and organizations, according to CMS.gov. These enrollment forms are submitted electronically through the Internet-based provider enrollment, chain and ownership system or by manually using the CMS-855.
Enrollment as a Medicare provider is open to physicians, nonphysicians and organizations through the PECOS system. This system maintains a record of current enrollment status, accepts updates and documentation supporting an enrollment, and deactivates and reactivates the enrollment while permitting physicians to digitally sign the enrollment application, according to the American Medical Association. The AMA has contributed to the improvement of this system and is a source of additional information about Medicare provider enrollment. The organization encourages the use of PECOS as source of information about the status of new applications and existing provider enrollment status despite reporting that the CMS-855 is easier to process. The reduced follow-up and interactive guidance during the application process are cited as the key benefits of using the PECOS system, notes CMS.gov.
Medicare administrative contractors are also sources of information about the Medicare and Medicaid enrollment process. MACs are able to provide information about the process and the correct destination for an enrollment application package that includes the application form and all supporting documentation, states CMS.gov.