Arterial hypertension is a condition in which the blood pressure is elevated.
A doctor or family doctor is responsible for diagnosing and prescribing medical treatments to patients. The family doctor refers to patients where a specialist when a specific treatment is required.
A cardiologist is a doctor who specializes in the diagnosis and treatment of diseases of the heart and blood vessels: the cardiovascular system.
The nephrologist a doctor specialized in the kidneys and their functions.
Remember that for the proper selection of health professional that treats arterial hypertension you must consider the nature, severity and symptoms you are presenting.