Final answer:
The audit of Dr. Simmons' office is related to billing practices and involves a complaint filed by a Medicare patient. The regulatory body overseeing Medicare billing practices will conduct the audit.
Step-by-step explanation:
The audit of Dr. Simmons' office is related to billing practices and involves a complaint filed by a Medicare patient. Medicare is a government healthcare program that provides coverage for elderly and disabled individuals.
The audit will be conducted by the appropriate regulatory body responsible for overseeing Medicare billing practices. They will review the billing records and investigate whether there were any violations or improper billing practices.