Private health facilities are diverse, highly dynamic, and difficult to classify, unlike public health facilities, which are easily grouped in classes that consist of community-based (level I) services, run by community health workers; dispensaries (level II facilities) run by nurses; health centres (level III facilities), run by clinical officers; sub-county hospitals (level IV facilities), which may be run by a clinical officer or a medical officer; county hospitals (level V facilities), which may be run by a medical officer or a medical practitioner; and national referral hospitals (level VI facilities), which are run by fully qualified medical practitioners.