Maryland Code, Health Occupations § 2-402

(a) Unless authorized to practice audiology under this title or unless otherwise provided for in this article, a person may not represent to the public by title, by description of services, methods, or procedures, or otherwise that the person:

(b) Unless authorized to practice audiology under this title or unless otherwise provided for in this article, a person may not use, with the intent to represent that the person practices audiology, words or terms, including:

(c) While performing the duties of that employment, an individual employed by any agency of the federal government may use any of the titles listed in subsection (b) of this section.