SCHEFFIELD MEDICAL GROUP, INC. , Petitioner, v. WORKERS' COMPENSATION APPEALS BOARD, CALIFORNIA INDEMNITY INSURANCE COMPANY et al. , Respondents. Dr. Michael Wai-Pui Lam, owner of the three medical groups and licensed radiologist, testified on behalf of Scheffield. Scheffield petitioned for reconsideration, raising arguments reiterated in its petition for review and discussed in detail, post. [1] Scheffield first contends that the Board erred in applying the 1993 version of section 4628 when services were rendered in 1991 and 1992. Scheffield contends that the decision in Scheffield v. Workers' Comp.

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