Maryland Health - General Section 20-103
(a)   Except as provided in subsections (b) and (c) of this section, a physician may not perform an abortion on an unmarried minor unless the physician first gives notice to a parent or guardian of the minor.
(b)   The physician may perform the abortion without notice to a parent or guardian if:
(1)   The minor does not live with a parent or guardian; and
(2)   A reasonable effort to give notice to a parent or guardian is unsuccessful.
(c)   (1)   The physician may perform the abortion, without notice to a parent or guardian of a minor if, in the professional judgment of the physician:
(i)   Notice to the parent or guardian may lead to physical or emotional abuse of the minor;
(ii)   The minor is mature and capable of giving informed consent to an abortion; or
(iii)   Notification would not be in the best interest of the minor.
(2)   The physician is not liable for civil damages or subject to a criminal penalty for a decision under this subsection not to give notice.
(d)   The postal receipt that shows an article of mail was sent by certified mail, return receipt requested, bearing a postmark from the United States Postal Service, to the last known address of a parent or guardian and that is attached to a copy of the notice letter that was sent in that article of mail shall be conclusive evidence of notice or a reasonable effort to give notice, as the case may be.
(e)   A physician may not provide notice to a parent or guardian if the minor decides not to have the abortion.