Cathy Cress, a gerontology expert, has an interesting video on weekly visitation of health care professionals at her web site.
A Geriatric Case Manager (GCM) with a Masters in social work, Ms. Cress discusses the importance of weekly visits for the GCM, with care provider training being an important side benefit.
Even more important from my viewpoint as a California licensed professional fiduciary is the benefit to a professional of seeing a client's progress over time.
The social benefits for an elder of visits with friends and family are well understood, but there's more. I've seen facility residents who receive frequent visits get more attention and better care.
Here's the link to her site: CathyCress.com.