Browse Health
Cardiologist (heart)
21 years of experience
Accepting new patients
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

  • He has special expertise in 5 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Unstable Angina

Education & Awards

Dr. Hajjar graduated from Harvard University , Boston.


Dr. Hajjar has 3 hospital affiliations:

  • Mt Sinai Hospital 
  • Mount Sinai Hospital of Queens 
  • Massachusetts General Hospital 


  • Abkhazian
  • Mandarin
  • Spanish
  • Armenian
  • French
  • Italian
  • Chinese
  • Japanese
  • Korean
  • Arabic

> > > > Dr. Roger Hajjar, MD

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Additional Information
Dr. Roger Joseph Hajjar MD is a male Internist, has 21 years of experience and practices in Cardiovascular Disease.
Where does Dr. Roger J. Hajjar practice?
Dr. Roger Hajjar has 2 office locations.
Dr. Roger Hajjar practices Cardiovascular Disease near New York, NY.
Additional practice locations include: Boston, MA.
See New York Cardiologists.