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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 (48)

The overall average patient rating of Dr. John Sullivan is Excellent. Dr. Sullivan has been reviewed by 888 patients who have provided 48 comments. The rating is 4.5 out of 5 stars.

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

Specialties & Research

Dr. John Sullivan, MD is board certified in Internal Medicine and Pediatrics.

Education & Awards

Dr. Sullivan graduated from Tufts University, Boston. He has 1 awards.

Patients' Choice Award (2014)


Dr. Sullivan has 5 hospital affiliations:

  • Winchester Hospital 
  • Winchester Hospital, Winchester, Ma 


  • Spanish
  • English

> > > > Dr. John Sullivan, MD

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Additional Information
Dr. John Joseph Sullivan MD is a male Internist, has 42 years of experience and practices in Internal Medicine and Pediatrics.
Where does Dr. John J. Sullivan practice?
Dr. John Sullivan has 4 office locations.
Dr. John Sullivan practices Internal Medicine and Pediatrics near Worcester, MA.
Additional practice locations include: Brookline, MA and Salem, MA.
See Worcester Internists and Worcester Pediatricians.