Re: Chiropractor Office
Calling it a "healthcare issue" is too vague to allow anyone to establish the minimum requirements. If the "healthcare" means "hospital, complete with operating rooms," then you are looking at backup generators and at separate Life Safety, Critical, and Equipment Branches. At the other end of the scale, the insurance claims office is also related to "healthcare," and it has no special requirements for electrical installation.
So exactly what is the "healthcare issue"?
I've never been in a Chiropractor's office, so I don't know what types of equipment are there, nor what types of care are given there. Your inspector might be calling this a "Patient Care Area," per article 517's definitions, and citing 517.13(A). But that is talking about branch circuits, and you are talking about a feeder. So I don't know what to tell you. But you need to establish the type of facility and the applicable rules, in order to get your answer.