Maryland Code, Insurance § 15-116

(a)(1) In this section the following words have the meanings indicated.

(2) “Carrier” means:

(3) “Health care provider” means an individual who is licensed, certified, or otherwise authorized under the Health Occupations Article to provide health care services.

(1) communications that relate to treatment alternatives;

(2) communications that are necessary or appropriate to maintain the provider-patient relationship while the patient is under the health care provider's care;

(3) communications that relate to an enrollee's or subscriber's right to appeal a coverage determination of a carrier with which the health care provider, enrollee, or subscriber does not agree; and

(4) opinions and the basis of an opinion about public policy issues.