NNCO National Nephrology Certification Organization

New applications for certification through one or more of the NNCO certification programs will be suspended until further notice due to the COVID-19 pandemic.

NNCO is committed to providing comprehensive certification examinations which validate an individual’s qualifications and knowledge in specialized areas of Nephrology Technology.

Why Certify?

  • Your increased knowledge of dialysis improves your patient care
  • Your opportunities for career and leadership paths increase
  • Your title validates your skills and competence and raises your visibility
  • Your ability to provide the highest quality and safe patient care improves
  • Your enhanced résumé increases the possibility of raises and promotions


  • Meets CMS mandate for certification of Clinical Nephrology Technicians (CCNT)
  • First certifying body to offer certification for Biomedical Nephrology Technologists (CBNT), developed by biomeds
  • Only available certification for Dialysis Water Specialists (CDWS)
  • Free professional listing of certification on NNCO website
  • No annual or hidden fees
  • 4 year certification

NNCO thanks the following supporters of our mission

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Nephrology Certification Examinations
These examinations are administered for NNCO by Professional Testing Corporation (PTC) and are offered at proctored computerized facilities throughout the year in the United States and Canada.

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