CARF (Commission on Accreditation of Rehabilitation Facilities) primarily focuses on accreditation for services related to rehabilitation, which include chronic pain management, brain injury management, and vocational evaluation, all of which are aligned with rehabilitation goals. Palliative care, on the other hand, is designed to provide relief from the symptoms and stress of serious illness, and is generally more aligned with hospice services rather than rehabilitation services. Hence, palliative care is the service least likely to be provided by a CARF-accredited facility.