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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. John Clayton, MD is board certified in Emergency Medicine and Internal Medicine.


Education & Awards

Dr. Clayton graduated from Boston University .


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Additional Information
Dr. John Preston Clayton MD is a male Emergency Medicine Specialist, has 28 years of experience and practices in Internal Medicine and Emergency Medicine.
Where does Dr. John P. Clayton practice?
Dr. John Clayton has 1 office location.
Dr. John Clayton practices Internal Medicine and Emergency Medicine near Bethesda, MD.
See Bethesda Internists and Bethesda Emergency Physicians.