Medicare (CMS)
MedicareFederal program administered by the Centers for Medicare & Medicaid Services. Medicare Administrative Contractor (MAC) regional assignments will be added only when verified against CMS sources.
Official links
Organization
Available verified directory entries
Select a location
State-specific contacts are only shown after selecting the matching directory entry — the organization record itself never carries state phone numbers.
Denial workflows
Payer-specific AR guidance
Under development: Note
Payer-specific filing requirements, denial policies and AR workflows appear here only after they are verified against an authoritative source. AR Guide never publishes payer-specific rules it has not verified.