Endocrine is strange in that some of their subspecialties seem to be better suited for other specialties. I met an endocrinologist who specialized in lipid disorders recently, and that just seemed strange to me, because the our lipid specialist is a preventative cardiologist, but she told me that most lipid specialists are endocrinologists. Endocrine for hypertension seems a little peculiar to me too (since so few hypertensive cases fall under endocrine disorders, and those that do are usually surgically managed, medicines only serve as a bridge until the patient is able to get surgery), although I guess that there is a significant neuroendocrine factor for even primary hypertension. I imagine that most "hypertensive specialist" do focus extensively on research or work in academic settings. Hypertension is fairly "easy" condition for generalists to manage since almost everyone has it, almost everyone knows how to manage it. The number one reason in treatment failure is medical non-compliance though, I recall reading one study that stated that there was some 50% compliance with anti-hypertensives after 2 yrs of therapy.
