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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 Decker:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. Mark Decker is Average. Dr. Decker has been reviewed by 5 patients who have provided 2 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 3.0
Promptness 3.0
Courteous Staff 3.0
Accurate Diagnosis 3.0
Bedside Manner 3.0
Spends Time with Me 3.0
Follows Up After Visit 3.0

Specialties & Research

Dr. Mark Decker, MD is board certified in Diagnostic Radiology.

Education & Awards

Dr. Decker graduated from New York University - Mount Sinai.


Dr. Decker has 9 hospital affiliations:

  • New Island Hospital 
  • John T Mather Memorial Hospital 


  • Portuguese
  • Farsi
  • Ukrainian
  • Russian
  • Greek
  • Spanish
  • Hebrew
  • Italian

> > > > Dr. Mark Decker, MD

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Additional Information
Dr. Mark J Decker MD is a male Diagnostic Radiologist, has 19 years of experience and practices in Diagnostic Radiology.
Where does Dr. Mark J. Decker practice?
Dr. Mark Decker has 2 office locations.
Dr. Mark Decker practices Diagnostic Radiology near Greenvale, NY.
Additional practice locations include: East Setauket, NY.
See Greenvale Radiologists.