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Dr. John Chumas, MD is a Doctor primarily located in Port Jefferson, NY. He has 37 years of experience. His specialties include Pathology. Dr. Chumas is affiliated with St Charles Hospital & Rehab Center, John T Mather Memorial Hospital and St Charles Hospital & Rehab Ctr.. He speaks English.


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Specialties & Expertise

Dr. John Chumas has the following 1 specialty and 1 board certification.


A pathologist is a physician who specializes in the causes and paths taken by different diseases in order to accurately diagnose an illness.
Pathologists diagnose and determine the characteristics of a disease through the study of biopsies of diseased tissue or of bodily fluids. For example, a pathologist will look at a biopsy of a skin lesion in order to diagnose or rule out skin cancer. A pathologist will also look at a Pap smear in order to check for a gynecological cancer like cancer of the uterus.
In addition to determining the cause and development of a disease, these specialists also study the changes a disease makes to a body and the consequences of those structural changes.

Board Certification

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Locations & Directions

St Charles Hospital & Rehab Center

200 Belle Terre Rd
Port Jefferson, NY 11777

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