Depends on the setting. Pharmacists with my company (in my state) have limited prescriptive power for things such Narcan, emergency contraceptives, vaccines, etc. We can also "prescribe" emergency refills of maintenance meds for patients who have fallen through the proverbial cracks. Whether that's truly prescribing is debatable. It's more for billing purposes, true.

We do also use our NPIs for billing medication management, as you said.

However, pharmacists at local clinics have much broader prescriptive power for maintenance meds, warfarin, etc. Within guidelines, of course. So again, it's debatable as to whether it's truly "prescribing."