Maryland Code, Public Safety § 3-532

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

(2) “Interested party” means a health care practitioner, as defined in § 19-144(3) of the Health--General Article, or another interested person who has sufficient information to inform a law enforcement agency of another individual's health-related condition or circumstance that represents a safety concern of the individual.

(3) “Qualified request” means an oral or written request that includes credible information regarding a specific safety concern.

(4) “Wellness check” means an in-person visit by a law enforcement officer concerning the well-being of an individual.

(b)(1) Subject to subsection (c) of this section, if a law enforcement agency receives a qualified request from an interested party for a wellness check of an individual located in the law enforcement agency's jurisdiction, the law enforcement agency shall conduct a wellness check of the individual without unreasonable delay.

(2) Subject to subsection (c) of this section, if a law enforcement agency receives a qualified request from an interested party for a wellness check of an individual who is not located in the law enforcement agency's jurisdiction, the law enforcement agency shall submit a request to the relevant law enforcement agency in the State or another state to conduct a wellness check of the individual without unreasonable delay.