OREANDA-NEWS. A.M. Best has assigned a financial strength rating (FSR) of A- (Excellent) and an issuer credit rating (ICR) of “a-” to MedChoice Risk Retention Group, Inc. (MedChoice RRG) (Milton, VT). The outlook assigned to each rating is stable. In addition, A.M. Best has affirmed the FSR of A- (Excellent) and the ICR of “a-” of Physicians Insurance A Mutual Company (PI) (Seattle, WA). The outlook for each of these ratings is stable. The two companies comprise Physicians Insurance Mutual Group.