{"data":{"id":"us-mi/mich.-comp.-laws-600.2169","jurisdiction":"us-mi","citation":"Mich. Comp. Laws § 600.2169","heading":"Qualifications of expert witness in action alleging medical malpractice; determination; disqualification of expert witness; testimony on contingency fee basis as misdemeanor; limitations applicable to discovery.","body":"Sec. 2169.\n\nIn an action alleging medical malpractice, a person shall not give expert testimony on the appropriate standard of practice or care unless the person is licensed as a health professional in this state or another state and meets the following criteria:\n\nIf the party against whom or on whose behalf the testimony is offered is a specialist, specializes at the time of the occurrence that is the basis for the action in the same specialty as the party against whom or on whose behalf the testimony is offered. However, if the party against whom or on whose behalf the testimony is offered is a specialist who is board certified, the expert witness must be a specialist who is board certified in that specialty.\n\nSubject to subdivision (c), during the year immediately preceding the date of the occurrence that is the basis for the claim or action, devoted a majority of his or her professional time to either or both of the following:\n\nThe active clinical practice of the same health profession in which the party against whom or on whose behalf the testimony is offered is licensed and, if that party is a specialist, the active clinical practice of that specialty.\n\nThe instruction of students in an accredited health professional school or accredited residency or clinical research program in the same health profession in which the party against whom or on whose behalf the testimony is offered is licensed and, if that party is a specialist, an accredited health professional school or accredited residency or clinical research program in the same specialty.\n\nIf the party against whom or on whose behalf the testimony is offered is a general practitioner, the expert witness, during the year immediately preceding the date of the occurrence that is the basis for the claim or action, devoted a majority of his or her professional time to either or both of the following:\n\nActive clinical practice as a general practitioner.\n\nInstruction of students in an accredited health professional school or accredited residency or clinical research program in the same health profession in which the party against whom or on whose behalf the testimony is offered is licensed.\n\nIn determining the qualifications of an expert witness in an action alleging medical malpractice, the court shall, at a minimum, evaluate all of the following:\n\nThe educational and professional training of the expert witness.\n\nThe area of specialization of the expert witness.\n\nThe length of time the expert witness has been engaged in the active clinical practice or instruction of the health profession or the specialty.\n\nThe relevancy of the expert witness's testimony.\n\nThis section does not limit the power of the trial court to disqualify an expert witness on grounds other than the qualifications set forth in this section.\n\nIn an action alleging medical malpractice, an expert witness shall not testify on a contingency fee basis. A person who violates this subsection is guilty of a misdemeanor.\n\nIn an action alleging medical malpractice, all of the following limitations apply to discovery conducted by opposing counsel to determine whether or not an expert witness is qualified:\n\nTax returns of the expert witness are not discoverable.\n\nFamily members of the expert witness shall not be deposed concerning the amount of time the expert witness spends engaged in the practice of his or her health profession.\n\nA personal diary or calendar belonging to the expert witness is not discoverable. As used in this subdivision, \"personal diary or calendar\" means a diary or calendar that does not include listings or records of professional activities.","path":["MI Code","Chapter 600","Act Act-236-of-1961"],"source_url":"https://www.legislature.mi.gov/Laws/MCL?objectName=mcl-600-2169","current_through":"2026-08-14","vintage":"open-us-law v2026.08, retrieved 2026-09-14","retrieved_at":"2026-09-14T18:32:31Z","sha256":"f887338f7adda64720669f6e59fe39547b4b66fd56863903d50a0282b4d22921","source_id":"us-mi","stale":false,"prev":"us-mi/mich.-comp.-laws-600.2166","next":"us-mi/mich.-comp.-laws-600.217"},"notice":"GroundRules: Original legal text. Not legal advice."}