Just a response to your post..Dr. Vanichkachorn is no longer at Mayo in Rochester. He has been gone for over a year now. I have tried twice to get an appointment with physicians there since Dr. Van left. They will not see me anymore at Mayo. They really do not give me a reason why, they just send me an email saying they can not see me due to a large patient demand, which is really frustrating, as I have many problems due to my long covid has done to my health.