Browse Health
Cardiologist (heart)
36 years of experience
Accepting new patients
Video profile
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).

Patient Reviews

Patient comments (8)

The overall average patient rating of Dr. John Dervan is Excellent. Dr. Dervan has been reviewed by 39 patients who have provided 8 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.3
Promptness 4.3
Courteous Staff 4.9
Accurate Diagnosis 4.9
Bedside Manner 4.9
Spends Time with Me 4.8
Follows Up After Visit 4.8

Specialties & Research

Dr. John Dervan, MD is board certified in Cardiovascular Disease.

  • He has special expertise in 13 areas:
  • Acute Coronary Syndrome (ACS)
  • Angioplasty
  • Balloon Angioplasty (Coronary Angioplasty)
  • Coronary Artery Bypass (Heart Bypass)
  • Coronary Disease
  • Heart Block
  • Heart Catheterization
  • Heart Failure
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Myocardial Infarction
  • Recurrence
  • Unstable Angina

Education & Awards

Dr. Dervan graduated from Saint Louis University. He has 8 awards.

One of America's Leading Experts on:
Balloon Angioplasty (Coronary Angioplasty)
Castle Connolly Top Doctors: New York Metro Area™ (1998 - 2008, 2010 - 2015)
Patients' Choice 5th Anniversary Award (2013 - 2015)
Patients' Choice Award (2009 - 2015)
Compassionate Doctor Award - 5 Year Honoree (2014 - 2015)
Compassionate Doctor Recognition (2010 - 2015)
Top 10 Doctor - State (2014)
New York
Top 10 Doctor - Metro Area (2014)
New York Metro Area


Dr. Dervan has 13 hospital affiliations:

  • John T Mather Memorial Hospital 
  • Stony Brook University Hospital 


  • Italian
  • Spanish

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Additional Information
Dr. John Patrick Dervan MD is a male Internist, has 36 years of experience and practices in Cardiovascular Disease and Cardiology.
Where does Dr. John P. Dervan practice?
Dr. John Dervan has 1 office location.
Dr. John Dervan practices Cardiovascular Disease and Cardiology near East Setauket, NY.
See East Setauket Cardiologists.