Md. Code, Health Occupations § 1–210

(a) By August 31 of each year, each health occupations board authorized to issue a license or certificate under this article shall provide to the Department of Assessments and Taxation a list of persons issued licenses or certificates under this article during the previous fiscal year, to assist the Department of Assessments and Taxation in identifying new businesses within the State.

(b) The list provided under this section shall:

(1) Be provided free of charge; and

(2) Include, for each person on the list:

(i) The name and mailing address of the person; and

(ii) 1. The federal tax identification number of the person, if known; or

2. If the person does not have a federal tax identification number, the Social Security number of the person, if known.