Our Specialists Our apheresis nurses and physicians have many years of medical training and experience. We will work with you and your entire healthcare team to help you achieve improved health. Greg Connolly, M.D., Medical Director Majed Refaai, M.D., Associate Director Anne McDowell, N.P. Donna Cimbalo, R.N., Coordinator Jennifer McGar, R.N. Jeffrey Walent, R.N. Anne Ziegler, R.N.