Ari B. Geller, DO FASN


  • Washington University in St. Louis, BA, Biology, 1998
  • New York College of Osteopathic Medicine, Old Westbury, NY, Doctor of Osteopathy, 2002


  • Internship/Residency: Lenox Hill Hospital - Internal Medicine, 2002-2005
  • Chief Residency: Lenox Hill Hospital, 2005-2006
  • Fellowship: Lenox Hill Hospital - Nephrology,  2006-2008

Board Certifications:

  • Internal Medicine, 2005
  • Nephrology, 2008
  • Fellow, American Society of Nephrology

About Dr Geller:

Dr Geller joined Greater Hartford Nephrology in 2008. He is the recipient of the John O Vieta award for academic excellence and personal achievement. Dr Geller is interested in all aspects of Nephrology and Hypertension.  He has conducted research in several aspects of Nephrology, including anemia management in patients on dialysis and acute renal failure.  His ongoing research is on the subject of hyponatremia.  Outside of medicine, Dr. Geller enjoys running, hiking, snowboarding and cooking.