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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).

Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Andrew Duffy is Good. Dr. Duffy has been reviewed by 6 patients who have provided 4 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 3.7
Courteous Staff 4.7
Accurate Diagnosis 3.7
Bedside Manner 4.0
Spends Time with Me 3.7
Follows Up After Visit 5.0

Specialties & Research

Dr. Andrew Duffy, MD is board certified in Surgery.

  • He has special expertise in 7 areas:
  • Appendicitis
  • Colon Cancer
  • Diverticulitis
  • Gastrointestinal Cancer
  • Gastroparesis
  • Inflammatory Bowel Diseases (IBD)
  • Ulcerative Colitis

Education & Awards

Dr. Duffy graduated from University of Massachusetts, Worcester. He has 2 awards.

Castle Connolly America's Top Doctors® (2015)
Castle Connolly's Top Doctors™ (2012 - 2013)


Dr. Duffy has 4 hospital affiliations:

  • Yale-New Haven Hospital 
  • Nyp-Columbia 

> > > > Dr. Andrew Duffy, MD

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Additional Information
Dr. Andrew J Duffy MD is a male Surgeon, has 15 years of experience and practices in Surgery.
Where does Dr. Andrew J. Duffy practice?
Dr. Andrew Duffy has 1 office location.
Dr. Andrew Duffy practices Surgery near New Haven, CT.
See New Haven Surgeons.