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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).

Learn more about Dr. Mark Nelson:

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Specialties & Research

Dr. Mark Nelson, MD is board certified in Internal Medicine.

Education & Awards

Dr. Nelson graduated from The University of Texas Southwestern, Dallas.


Dr. Nelson has 1 hospital affiliations:

  • Va North Texas Healthcare System 

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Additional Information
Dr. Mark Stephen Nelson MD is a male Internist, has 29 years of experience and practices in Internal Medicine.
Where does Dr. Mark S. Nelson practice?
Dr. Mark Nelson has 1 office location.
Dr. Mark Nelson practices Internal Medicine near Dallas, TX.
See Dallas Internists.