Atherton Baptist Homes. Atherton, a respected Continuing Care Retirement Community (CCRC) or Life Plan Community in Alhambra, CA, has for over 110 years been an admired option for men and women who are committed to living lives of faith and friendship with the security of onsite health care, always at hand. Some of the best care in the entire San Gabriel Valley in independent living, assisted living, skilled nursing facility, rehabilitation and d...