Indiana Code Title 16. Health § 16-31-3-1

Sec. 1. (a) Except as provided in subsection (b), a person other than:

may not furnish, operate, conduct, maintain, advertise, or otherwise be engaged in providing emergency medical services, except for the use of an automated external defibrillator, as a part of the regular course of doing business, either paid or voluntary, unless that person holds a valid certificate or license issued by the commission.

(b) A:

who operates a business of transporting emergency patients by ambulance or using a nontransporting emergency medical services vehicle must hold a valid certificate issued by the commission under this article.