 OLDWICK, N.J.--BUSINESS WIRE--AM Best has commented that the Credit Ratings ratings of Anthem, Inc. Anthem Indianapolis, IN NYSE: ANTH and its insurance subsidiaries remain unchanged following the announcement that the group will acquire MMM Holdings, LLC, including its Puerto Rico-based insurance subsidiaries: MMM Healthcare, LLC MMM Healthcare, a Medicare Advantage MA plan; and MMM Multi Health, LLC MMM Multi Health, a Medicaid plan. The outlook of these ratings is stable. The 