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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. John Marshall:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. John Marshall is Excellent. Dr. Marshall has been reviewed by 1 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Courteous Staff 5.0
Accurate Diagnosis 3.7
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Education & Awards

Dr. Marshall graduated from Albany Medical College.


Dr. Marshall has 1 hospital affiliations:

  • Mercy Hospital 


  • Spanish

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Additional Information
Dr. John Duncan Marshall MD is a male Emergency Medicine Specialist, has 32 years of experience and practices in Emergency Medicine.
Where does Dr. John D. Marshall practice?
Dr. John Marshall has 1 office location.
Dr. John Marshall practices Emergency Medicine near Miami, FL.
See Miami Emergency Physicians.