Dr. Pereira joined AMAG Pharmaceuticals as President in November 2005, and was appointed Chief Executive Officer in November 2006.

Prior to joining the company, he was President and CEO of New England Health Care Foundation, a physicians' group at Tufts New England Medical Center from 2001 to 2005, and held various other positions at Tufts New England Medical Center from 1993 to 2001. From 2002 to 2004, he served as President of the National Kidney Foundation, and served on the editorial board of twelve scientific journals.

Dr. Pereira is a nationally–recognized expert on kidney disease and nephrology, and is the Editor of the widely read textbook Chronic Kidney Disease, Dialysis and Transplantation and has over 200 scientific papers to his credit. He is a Professor of Medicine at Tufts University School of Medicine and at the Sackler School of Biomedical Sciences of Tufts University. Dr. Pereira currently serves on the board of directors of Satellite Health Care Inc., Biodel, Inc., and Tengion Inc., and is the Chairman of the Board of the Harvard–MIT Biomedical Enterprise Program.

Dr. Pereira is a graduate of St. John's Medical College, Bangalore, India and has an MBA from the Kellogg Business School, Northwestern University.