Just curious. Have either of your chiro's applied to be Medicare providers and been accepted? How about the Group? If yes, the Provider I.D. numbers / PTAN will be found on those acceptance letters.
I direct your attention to the bolded sentence in my first post above. I should have been more specific. PTAN's are not used for billing. But they are tied to the registered place-of-service address of the billing entity. And they are also tied to the NPI number of the billing entity. The billing you are talking about is being submitted by the Group - billing which is tied to its place-of-service address but also tied to the Group's NPI number in the billing info submitted.
A provider must have a PTAN for each place of service, but his PTAN is tied to his NPI Number as well. The PTAN for a Group is also tied to its place-of-service address as well as to it's NPI Number. If you call for information about a particular billing, you must provide a PTAN that is not only tied to that place-of-service address, but also to the NPI Number submitted with the billing.
Whose NPI number gets submitted with the billing you are talking about? It would be the Group's, right (at least it should be if it is a Group as defined by Medicare). So which PTAN would you need to provide if you call for information about that billing? You need to provide the PTAN that is tied to both the place-of-service address and the NPI number that was submitted with the billing. In this case, the only PTAN that matches this criteria is the PTAN of the Group.
I need it initially to enroll the group for EDI claims submission.
Who is submitting the billing? The Group. Whose place-of-service address and NPI number get included with that billing? The Group. Whose PTAN number must be used here? The PTAN that matches the place-of-service and NPI number submitted with the billing. In your case, it is that of the Group. So the Group's PTAN is what is needed here.
All of that is an issue separate from the issue that you might need to provide identifying information for all owners of the group, or all employees who will be submitting billing under the Group's umbrella. The Clearinghouse will tell you what information it needs for each of those.