Wis. Stat. § 655.44
A request for mediation of a claim naming only one doctor did not toll the statute of limitations applicable to claims against doctors not named in the mediation request. Dipple v. Wisconsin Patients Compensation Fund, 161 Wis. 2d 854, 468 N.W.2d 789 (Ct. App. 1991). When a care provider was deceased, it was sufficient to name the deceased provider in the mediation request rather than a legal entity, such as the estate or the provider's insurer. In that case, the tolling of the statute of limitations under sub. (4) is effective against an insurer and the Wisconsin Patients Compensation Fund. Failure to name the fund as a party to an action brought against the insurer within the 30-day period under sub. (4) barred the claim against the fund. Geiger v. Wisconsin Health Care Liability Insurance Plan, 196 Wis. 2d 474, 538 N.W.2d 830 (Ct. App. 1995), 95-0692. The limitation periods under s. 893.55(1) (a) and (b) [now s. 893.55(1m) (a) and (b)] are both tolled by the filing of a request for mediation under sub. (4). Landis v. Physicians Insurance Company of Wis. Inc., 2001 WI 86, 245 Wis. 2d 1, 628 N.W.2d 893, 00-0330. Sub. (5) does not mandate dismissal for filing an action before the expiration of the statutory mediation period. When a plaintiff fails to comply with sub. (5), the circuit court retains discretion to determine the appropriate sanction. Ocasio v. Froedtert Memorial Lutheran Hospital, 2002 WI 89, 254 Wis. 2d 367, 646 N.W.2d 381, 00-3056. Nothing in the language of either s. 655.44 or 655.445 precluded the application of s. 655.44 to a mediation request filed under s. 655.445 when an action was filed but became a nullity due to failure to complete service. Young v. Aurora Medical Center, 2004 WI App 71, 272 Wis. 2d 300, 679 N.W.2d 549, 03-0224. Delivery of a mediation request by regular mail is not determinative of the validity of the request. Geisel v. Odulio, 807 F. Supp. 500 (1992). Failure to name the patient compensation fund in a mediation request did not exempt the fund from the tolling of the statute of limitations under sub. (4). Geisel v. Odulio, 807 F. Supp. 500 (1992).