Maryland Code, Health Occupations § 1-208

(2)(i) Except as otherwise provided in this paragraph, “health care practitioner” means a physician or any other person licensed or certified under this article and reimbursed by a third party payor.

(ii) Subject to the provisions of subparagraph (iii) of this paragraph, “health care practitioner” does not include a physician or other person licensed or certified under this article who is compensated by a health maintenance organization on a salaried or capitated basis.

(iii) The exclusion provided under subparagraph (ii) of this paragraph applies only when the physician or other licensed or certified person is rendering care to a member or subscriber of the health maintenance organization on a salaried or capitated system basis.

(i) A health maintenance organization issued a certificate of authority in accordance with Title 19, Subtitle 7 of the Health-General Article;

(ii) A health insurer or nonprofit health service plan authorized to offer health insurance policies or contracts in this State in accordance with the Insurance Article; or

(iii) A third party administrator registered under the Insurance Article.