(a) A party requiring testimony before any court, tribunal, or arbiter in any civil action or proceeding from any expert witness, other than a party or employee of a party, who is either, (1) an expert described in subdivision (b) of Section 2034.210 of the Code of Civil Procedure, (2) a treating physician and surgeon or other treating health care practitioner who is to be asked to express an opinion during the action or proceeding, or (3) an architect, professional engineer, or licensed land surveyor