Mass. Gen. Laws ch. 112 § 12K
As used in sections 12L to 12R, inclusive, the following words shall have the following meanings unless the context clearly requires otherwise:-
"Abortion", any medical treatment intended to induce the termination of, or to terminate, a clinically diagnosable pregnancy except for the purpose of producing a live birth; provided, however, that "abortion" shall not include providing care related to a miscarriage.
"Hospital", an institution as defined in section 52 of chapter 111 and duly licensed pursuant to section 51 of said chapter 111.
"Nurse midwife", a nurse who is designated as a certified nurse midwife by the board of registration in nursing pursuant to section 80B.
"Nurse practitioner", a nurse who is designated as a certified nurse practitioner by the board of registration in nursing pursuant to section 80B.
"Physician", a person registered with the board of registration in medicine to practice medicine within the commonwealth.
"Physician assistant", a person who is a graduate of an approved program for the training of physician assistants and who is supervised by a physician in accordance with sections 9C to 9K, inclusive.
"Pregnancy", the presence of an implanted human embryo or fetus in the uterus.
Mass. Gen. Laws ch. 112, § 12K