OLDWICK, N.J.--(BUSINESS WIRE)--A.M. Best has affirmed the financial strength rating of A++ (Superior) and the issuer credit rating of “aa+” of members of the MedPro Group (MedPro) (headquartered in Fort Wayne, IN). The ratings apply to The Medical Protective Company (Fort Wayne, IN), its affiliate, Princeton Insurance Company (Princeton, NJ) and its two reinsured affiliates, MedPro RRG Risk Retention Group and AttPro RRG Reciprocal Risk Retention Group (both domiciled in the District of Columb