Unfortunately, because CARF charges for its excellent certification process, many CCRCs that are quite good have not elected to spend the money to obtain such a certification (such as my own excellent Erickson CCRC at Wind Crest).
If you visit the CARF website, you can find their list of 43 CARF certified CCRCs that are among the Newsweek "250 Best" CCRCs in the USA in 2024.
https://carf.org/accreditation/programs/aging-services/americas-best-continuing-care-retirement-communities-2024/
The full list of the Newsweek 250 is here:
https://www.newsweek.com/rankings/americas-best-continuing-care-retirement-communities-2024
But bear in mind that Newsweek limited its "250 Best" solely to contenders that happen to be located in one of the 20 States that have a lot of CCRCs. California is one of the 20 states, but not other states in the Southwest.