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29 years of experience

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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. Dan Kass, Internist is Excellent. Dr. Kass has been reviewed by 50 patients who have provided 8 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.6
Promptness 4.7
Courteous Staff 4.6
Accurate Diagnosis 4.6
Bedside Manner 4.6
Spends Time with Me 4.5
Follows Up After Visit 3.8

Specialties & Research

Dr. Dan Kass, MD is board certified in Internal Medicine.

Education & Awards

Dr. Kass graduated from University of Guadalajara, Mexico, San Antonio. He has 3 awards.

Patients' Choice Award (2012 - 2015)
Compassionate Doctor Recognition (2012, 2015)
On-Time Doctor Award (2014 - 2015)


Dr. Kass has 5 hospital affiliations:

  • St Charles Hospital 
  • John T Mather Memorial Hospital 


  • Spanish
  • English

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Additional Information
Dr. Dan Martin Kass MD is a male Internist, has 29 years of experience and practices in Internal Medicine.
Where does Dr. Dan M. Kass practice?
Dr. Dan Kass has 1 office location.
Dr. Dan Kass practices Internal Medicine near Port Jefferson, NY.
See Port Jefferson Internists.