Home healthcare in the UAE is a licensed activity twice over: the doctor holds a personal professional licence, and the company holds a facility licence for home healthcare services. The authority depends on the emirate where the service operates. In Dubai it is the Dubai Health Authority, and you can check any practitioner on the DHA's public licence search. In Abu Dhabi and Al Ain it is the Department of Health, with its own professional register. Sharjah, Ajman, Ras Al Khaimah, Fujairah and Umm Al Quwain fall under the Ministry of Health and Prevention, MOHAP, which also runs a searchable registry.
One more piece of context worth knowing: the UAE's health-record exchanges, NABIDH in Dubai, Malaffi in Abu Dhabi, Riayati nationally, mean a properly documented home visit can become part of your longitudinal record rather than a loose PDF. Vendors connected to these systems tend to be the more institutional operators, which is a useful quality signal in itself.