Mass. Gen. Laws ch. 112 § 120
Upon satisfaction of requirements specified in section one hundred and nineteen, the applicant shall pass an examination administered by the board. Examinations shall be conducted at least once a year at a time and place to be designated by the board. Examinations shall be written, oral or both as the board deems advisable. An applicant shall be held to have passed an examination upon the affirmative vote of at least five members of the board. Any person who shall have failed an examination conducted by the board may not be admitted to a subsequent examination for a period of at least six months.
Any licensed psychologist who independently provides or offers to provide to the public, health services, shall be certified as a health service provider by the board. The board shall certify as a health service provider applicants who shall demonstrate that they have at least two years full time of supervised health service experience, of which at least one year is before receiving the doctoral degree and at least one year of which is in a health service training program.
Mass. Gen. Laws ch. 112, § 120