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Professional Statement

  • Dr. Clifton Jackness is an endocrinologist treating patients in New York City, and the surrounding communities. He holds certification from the American Board of Internal Medicine in internal medicine and endocrinology, diabetes, and metabolism. He is also a member of professional organizations including the American Medical Association, the Endocrine Society, the New York County Medical Society, and the American Association of Clinical Endocrinologists.
  • For his undergraduate degree, Dr. Jackness attended Yale University, where he studied music. He pursued his medical degree at the Albert Einstein College of Medicine. Dr. Jackness continued his medical education at the Mount Sinai Hospital. Here, he completed an internship program and received residency training in internal medicine. Dr. Jackness has also completed a fellowship program in endocrinology at Columbia University.
  • Patients visiting Dr. Jackness can receive treatment for a full range of endocrine issues. He provides general consultations, osteoporosis evaluations, and treatment for issues including goiter, hair loss, diabetes, thyroid problems, adrenal problems, obesity, and pituitary problems. In addition to his clinical roles, Dr. Jackness has been active in research on topics including obesity and type 2 diabetes.


  • Medical School - Albert Einstein College of Medicine of Yeshiva University
  • The Mount Sinai Hospital, Residency in Internal Medicine
  • NewYork-Presbyterian Hospital / Columbia University Medical Center, Fellowship in Endocrinology and Bone Disease and Diabetes and Metabolism

Board Certifications

  • American Board of Internal Medicine
  • Endocrinology, Diabetes & Metabolism (Internal Medicine)

Professional Memberships

  • Endocrine Society
  • American Association of Clinical Endocrinologists
  • New York Thyroid Club
  • Metropolitan New York Bone Club
  • Medical Society of the State of New York
  • American Medical Association

Language Spoken

  • English
  • Spanish