Dr Barry Maron is not in Minneapolis any longer. He moved to Boston and is affilated with the HCM Center at Tufts. There are several excellent HCM specialists at Mayo and elsewhere. HCM is not a common disease in that most cardiologists do not see a lot of patients with this disease. Therefore, if you can get to a specialist you should. You can contact the HCM Association in NJ for a list of certified HCM centers of excellence. 4hcm.org . good luck