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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. Robert Johnson, MD is board certified in Internal Medicine.

Education & Awards

Dr. Johnson graduated from University of Pennsylvania , Philadelphia.


Dr. Johnson has 1 hospital affiliations:

  • University Of Texas Medical Branch 

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Additional Information
Dr. Robert Gahagen Johnson MD is a male Internist, has 31 years of experience and practices in Internal Medicine.
Where does Dr. Robert G. Johnson practice?
Dr. Robert Johnson has 1 office location.
Dr. Robert Johnson practices Internal Medicine near Galveston, TX.
See Galveston Internists.