Mayo Clinic's Stroke Center in Phoenix, Arizona works with you to review treat options and choose the care plan that best suits your needs and goals. Mayo Clinic in Phoenix, Arizona is certified as a Primary Stroke Center by The Joint Commission. The cerebrovascular team subspecializes in many complex conditions, including vascular malformations, Moyamoya disease, intracranial aneurysms, carotid stenosis, vertebral artery stenosis, intracranial arterial stenosis, and patent foramen ovale (PFO).