BPC §2538.20: It is unlawful for an individual to engage in the practice of fitting or selling hearing aids, or to display a sign or in any other way to advertise or hold themselves out as being so engaged without

It is unlawful for an individual to engage in the practice of fitting or selling hearing aids, or to display a sign or in any other way to advertise or hold themselves out as being so engaged without having first obtained a license from the board under the provisions of this article. Nothing in this article shall prohibit a corporation, partnership, trust, association, or other like organization maintaining an established business address from engaging in the business of fitting or selling, or offering for sale, hearing aids at retail without a license, provided that any and all fitting or selling of hearing aids is conducted by the individuals who are licensed pursuant to the provisions of this article. A person whose license as a hearing aid dispenser has been suspended or revoked shall not be the proprietor of a business that engages in the practice of fitting or selling hearing aids nor shall that person be a partner, shareholder, member, or fiduciary in a partnership, corporation, association, or trust that maintains or operates that business, during the period of the suspension or revocation. This restriction shall not apply to stock ownership in a corporation that is listed on a stock exchange regulated by the Securities and Exchange Commission if the stock is acquired in a transaction conducted through that stock exchange.