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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 (8)

The overall average patient rating of Dr. John Cai is Excellent. Dr. Cai has been reviewed by 17 patients who have provided 8 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.2
Promptness 3.9
Courteous Staff 4.1
Accurate Diagnosis 4.3
Bedside Manner 4.3
Spends Time with Me 4.3
Follows Up After Visit 4.2

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. Cai graduated from Shanghai Jiao Tong University. He has 2 awards.

Patients' Choice Award (2008 - 2009, 2011 - 2012, 2014)
Compassionate Doctor Recognition (2011 - 2012, 2014)


Dr. Cai has 9 hospital affiliations:

  • Catholic Health System - Mercy Hospital of Buffalo 
  • St Elizabeth Medical Center 


  • Arabic
  • Mandarin
  • French
  • Russian
  • Hindi
  • Spanish
  • Vietnamese
  • Albanian

> > > > Dr. John Cai, MD

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Additional Information
Dr. John J Cai MD is a male Internist, has 27 years of experience and practices in Internal Medicine, Cardiovascular Disease, and Cardiology.
Where does Dr. John J. Cai practice?
Dr. John Cai has 3 office locations.
Dr. John Cai practices Internal Medicine, Cardiovascular Disease, and Cardiology near Buffalo, NY.
Additional practice locations include: New Hartford, NY.
See Buffalo Internists and Buffalo Cardiologists.