Final answer:
A pharmacist has to notify a provider about a prescription refill via emergency refill authorization, but the specific time frame may vary.
Step-by-step explanation:
A pharmacist has to notify a provider that a prescription has been refilled via emergency refill authorization within a certain time frame. According to the information provided, the sponsor must report unexpected serious and fatal adverse drug events to the FDA within 15 days. However, the specific time frame for a pharmacist to notify a provider about a refill may vary depending on local regulations or specific emergency refill policies.