A professional limited liability company, as the name implies, is a company made up of licensed persons who have been legally authorized to provide a professional service. Professional limited liability companies must consist of at least one member who is licensed in each professional service being offered. If there is more than one member, they must all be licensed to provide the services of the company.

Those professions which must form as a professional service limited liabilty company are dentists, osteopathic physicians, physicians, surgeons, doctors of divinity or other clergy and attorneys at law.