Maine Medical Center
Providers conferencing over a hospital bed

Faculty

Dr. I. Mihai Cosma (Program Director)

Dr. I. Mihai Cosma is currently the Nephrology Fellowship Training Program Director. His interests are interventional nephrology and he is a hypertension specialist. He is also interested in translational research and clinical teaching. He completed both his internal medicine residency and nephrology fellowship training at Maine Medical Center. He is an Assistant Clinical Professor of Medicine at Tufts University School of Medicine.  


Dr. Alan Segal (Associate Program Director)

Dr. Segal is a physician-scientist and clinical-educator who has been a nephrologist since completing his fellowship at Yale in 1992. Following undergraduate and graduate school in electrical and biomedical engineering at the University of Illinois at Urbana-Champaign, he obtained his MD from the University of Chicago in 1985.

His practice experience covers the entire spectrum of clinical nephrology with specific expertise in fluid/electrolytes, acid-base, and acute kidney injury. His research, which has been funded by the National Kidney Foundation and the NIH, focuses on the electrophysiology and biophysics of membrane transport and the role of ion channels in health and disease. For more than a decade, he was also a nephrology fellowship program training director.

Dr. Segal moved to Maine in March 2022 and is very excited to be working collaboratively with the strong group of nephrologists and nurses in partnership with patients and their families. He is devoted to helping anyone with any problem related to the kidney.
He is a lifelong Cubs fan, a patron of the arts—particularly Broadway and its history—and a student of comedy—particularly Improv as practiced at the original Second City in Chicago.


Dr. Michael Akom

Dr. Michael Akom is the managing physician of MMP Nephrology. His clinical interests in nephrology are broad and he participates as one of the four transplant nephrologists in the Maine Transplant Program. He completed internal medicine residency and the first portion of his fellowship at the University of Maryland. He subsequently completed fellowship at Maine Medical Center and joined the Maine Medical Center nephrology faculty. Dr. Akom is a Clinical Assistant Professor of Medicine at Tufts University School of Medicine.


Dr. Patricia Cantlin

Dr. Patricia Cantlin is the Medical Director of Casco Bay Dialysis Facility and has a broad range of clinical interests in nephrology, including renal disease in pregnancy and dialysis. She completed her internal medicine residency at Michael Reese Medical Center/University of Illinois Medical Centers in Chicago, and subsequently did nephrology fellowship at Maine Medical Center. She is a Clinical Assistant Professor of Medicine at Tufts University School of Medicine.


Dr. Arjang Djamali

Arjang Djamali, MD, MS, FACP, FASN is Professor and Maurice S. Segal, MD, Chair of Medicine, Tufts University School of Medicine, and Chair of the Department of Medicine at Maine Medical Center in Portland, ME. He earned his medical degree from Montpellier Medical School in Montpellier, France. He completed his residency in internal medicine at Wayne State University in Detroit, MI and his fellowship in nephrology at the University of Wisconsin Madison in Madison, WI. Dr Djamali is board certified in internal medicine and nephrology. Dr Djamali is a member of the American Society of Nephrology, the American Society of Transplantation, the American College of Physicians, and the Association of Professors of Medicine. He is considered a national leader in the areas of antibody-mediated processes and kidney transplant outcomes. Dr Djamali has been funded by the NIH, Foundations, and Industry throughout his career. He has been a member of the NIH, VA-H, and national societies’ grant review panels, a member of advisory panels to the FDA and pharmaceutical industry, an invited speaker nationally and internationally, and a member of planning committees for national and international society meetings. Dr Djamali has published more than 200 manuscripts in peer-reviewed journals and is the associate editor of Kidney360, the most recent publication from the American Society of Nephrology.


Dr. Hassan Mahmoud

Dr. Mahmoud joined MMP Nephrology in July of 2021. He completed his internal medicine residency at Maine Medical Center and his nephrology fellowship at Boston University.


Dr. Grant Oakley

Dr. Oakley joined MMP Nephrology in July of 2021. He completed his internal medicine residency at New Hanover Regional Medical Center, Wilmington, North Carolina. He is a graduate of the Maine Medical Center Nephrology Fellowship program.


Dr. Mark Parker

Dr. Mark Parker is the Vice President of Quality and Safety for Maine Medical Center and the former director of the Division of Nephrology and Transplantation. He is a quality improvement specialist and is known nationally in nephrology for his work in medical education and workforce recruitment. His clinical areas of interest include resistant hypertension management and kidney transplantation. He completed his internal medicine residency and nephrology fellowship at Tufts-New England Medical Center in Boston. He is a Clinical Professor of Medicine at Tufts University School of Medicine.


Dr. Paul Parker

Dr. Paul Parker is the Medical Director of York County Dialysis Center and has clinical interests that include chronic kidney disease, dialysis therapies, and nephrolithiasis. He completed his internal medicine residency at Hartford Hospital and his nephrology fellowship training at the University of Iowa Medical Center. He is a Clinical Assistant Professor of Medicine at Tufts University School of Medicine. 


Dr. Eric Taylor

Dr. Eric Taylor is a nephrologist, clinical investigator, and Associate Professor of Medicine at the Tufts University School of Medicine. Since completing his nephrology training at Brigham and Women's Hospital in 2005, he has been Principal Investigator on five R01 NIH grants. He is currently a Physician Editor in nephrology for UpToDate. He is delighted to precept Maine Medical Center nephology fellows in their outpatient clinics.


Dr. John Vella

Dr. John Vella is the Director of Nephrology & Transplantation at Maine Medical Center. He did internal medicine residency at Beaumont Hospital in Dublin, Ireland and Boston City Hospital. He went on to complete clinical nephrology training back in Dublin and then did transplant immunobiology and clinical transplantation fellowships at Brigham & Women’s Hospital & Massachusetts General Hospital, Boston. He is a nationally recognized authority in kidney transplantation. In addition to authoring numerous original research publications, invited reviews and book chapters, he has been the editor of the journal Transplantation NephSAP for more than a decade. He is a Clinical Associate Professor at Tufts University School of Medicine.


Dr. James Wasserman

Dr. James Wasserman is the Medical Director of Southern Maine Dialysis Facility. His clinical interests include chronic kidney disease and dialysis therapies. His research expertise is in the application of rehabilitation programs into therapy for kidney disease. He completed internal medicine residency at Albert Einstein College of Medicine in New York, and nephrology fellowship at Brigham & Women’s Hospital in Boston. He is a Clinical Associate Professor at Tufts University School of Medicine. 


Adjunct Faculty

Transplant Program

  • Faysal Elgilani, MD
  • Juan Palma-Vargas, MD
  • Deborah Hoch, DNP
  • Marizela Savic, PharmD

Department of Pathology

  • Douglas Dressel, MD

Division of Pediatric Nephrology

  • Oliver Fremont, MD
  • Marie H. Tanzer, MD
  • Ronald Zviti, MD

Immunogenetics

  • Ronald Rubocki, PhD

Togus Veterans Administration Medical Center

  • Brad Schimelman, MD (Site Director)
  • Payson Oberg-Higgins, MD