Asia-Pacific Economic Cooperation, or APEC, is the premier forum for facilitating economic growth, cooperation, trade and investment in the Asia-Pacific region.
Provider Transaction Access Number (PTAN) A PTAN is a Medicare-only number issued to providers by MACs upon enrollment to Medicare. When a MAC approves enrollment and issues an approval letter, the letter will contain the PTAN assigned to the provider.
They are used for I.D. purposes when trying to access any Medicare info pertaining to the billing. The PTAN is tied to the registered address of the billing entity. Since your guys bill under the Group, the billing would go in with the Group's address. So any queries regarding that billing might require the Group's PTAN rather than the individual provider's PTAN.