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. Frank Akwaa, M.D., Medical Director Majed Refaai, M.D., Associate Director Anne McDowell, N.P. David Waples, RN Jennifer McGar, R.N. Jeffrey Walent, R.N. Anne Ziegler, R.N.