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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

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Specialties & Research

Dr. Nathaniel Clark, MD, MS, RD is board certified in Endocrinology, Diabetes & Metabolism and Pediatrics.

  • He has special expertise in 8 areas:
  • Cancer
  • Cardiovascular Disease
  • Diabetes
  • Diabetes Mellitus
  • Diabetes
  • Growth Disorders
  • Obesity
  • Thyroid Diseases

Education & Awards

Dr. Clark graduated from University of Massachusetts, Worcester. He has 4 awards.

One of America's Leading Experts on:
Diabetes Mellitus
Castle Connolly's Top Doctors™ (2013)
Bridges to Excellence Recognition
Diabetes Care Recognition (2014 - 2016)
Level I
NCQA Diabetes Physician Recognition Program (2014 - 2017)


Dr. Clark has 6 hospital affiliations:

  • Robert Wood Johnson Univ Hosp 
  • Cape Cod Hospital 

> > > > Dr. Nathaniel Clark, MD, MS, RD

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Additional Information
Dr. Nathaniel G Clark MD, MS, and RD is a male Internist, has 23 years of experience and practices in Pediatrics and Endocrinology, Diabetes & Metabolism.
Where does Dr. Nathaniel G. Clark practice?
Dr. Nathaniel Clark has 2 office locations.
Dr. Nathaniel Clark practices Pediatrics and Endocrinology, Diabetes & Metabolism near Hyannis, MA.
See Hyannis Pediatricians and Hyannis Endocrinologists.