In Miguel Lorenzo v. Kiewit Corp. d/b/a Kiewit Infrastructure South Co and Old Republic Insurance Company, Sedgwick CMS Claimant filed for a One Time Change and the E/C claimed they had properly and timely provided claimant with a one-time change of physician. To the contrary, claimant prosecuted his claim for a OTC provider of his choice. The claimant was treating with two difference physicians for two different parts of body. The one time change request did not specify from which physician the OTC. The five day OTC response time commenced upon claimant’s counsel’s notification to the E/C of the affected doctor and subject body part. Here, the E/C had timely responded from that date. Claimant’s request for OTC provider of his choice DENIED.