Photo of Dr. Chris E. Lascarides, MD

Dr Chris E. Lascarides is a general gastroenterologist with over 20 years of experience taking care of patients on Long Island.

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Dr. Lascarides

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of Dr. Lascarides

Mather Gastroenterology  

Accepting New Patients?

Yes, Dr. Chris E. Lascarides is accepting new patients at this office.


1500 Route 112, Building 6, Suite A, Port Jefferson Station, NY 11776

Office Details

Doctor Specialty Gastroenterology
Accepting New Patients? Yes
Practice Specialty Gastroenterology
Languages Spoken

Insurance Accepted  

  • Medicare

About Dr. Lascarides
Dr. Lascarides


Dr. Lascarides is a board-certified gastroenterologist and a founding member of Mather Gastroenterology. Aftergraduating summa cum laude from New York University’sCollege of Arts and Science, Dr. Lascarides completed his medical degree at the NYU School of Medicine, where he was inducted into the Alpha Omega Alpha National Medical Honor Society. Dr. Lascarides completed his internship and residency at the prestigious NYU-Bellevue Internal Medicine Residency Program, followed by a highly selective fellowship in gastroenterology at NYU-Bellevue in association with the Manhattan Veterans Affairs Hospital. 


A Long Island native, Dr. Lascarides began his career in 2003 as an attending gastroenterologist in private practice at the NYU-affiliated Great Neck Medical Group. In 2008, Dr. Lascarides joined the faculty at the Stony Brook University School of Medicine where, as Associate Professor of Medicine, he spearheaded expanded access to outpatient gastroenterological care and colorectal cancer screening. As a 9/11 first responder, Dr. Lascarides has dedicated two decades of his career to providing unsurpassed care to Long Island’s World Trade Center responders. He has been a leading medical educator and has been instrumental in the training of the next generation of medical students, interns, residents, and GI physicians. 


Dr Lascarides is excited to bring his expertise in general gastroenterology to Mather Hospital, a respected and compassionate healthcare provider with the vision and resources to better serve his growing practice. Dr. Lascarides specializes in colon cancer screening and is highly skilled in performing endoscopic procedures including colonoscopy, sigmoidoscopy, upper endoscopy and small bowel video capsule endoscopy. Dr. Lascaridesbrings an extensive degree of expertise to the treatment of gastro-esophageal reflux disease (GERD), Barrett’s esophagus, difficult-to-remove colon polyps, diverticular diseases, peptic ulcer disease, Celiac disease, World Trade Center-related gastrointestinal issues, and other luminal GI disorders.


Conditions Treated 

  • Abdominal Pain
  • Anemia and Gastrointestinal Bleeding
  • Barrett's Esophagus
  • Celiac Disease
  • Colon Cancer Screening
  • Constipation
  • Diarrhea
  • Diverticulosis / Diverticulitis
  • Functional Bowel Disease
  • GERD / Acid Reflux / Heartburn
  • Irritable Bowel Syndrome (IBS)
  • nausea and vomiting
  • Peptic Ulcer Disease (including Upper Endoscopy)
  • Rectal Bleeding

Services & Procedures

  • Capsule Endoscopy of Small Intestines
  • Colonoscopy
  • PEG placement
  • Polyp Removal
  • Upper Endoscopy

Special Interests  

  • I have a special interest in taking care of World Trade Center First Responders that served at Ground Zero after the terrorist attacks on the morning of September 11, 2001.

Education & Training  

Medical School


  • New York University-Bellevue Hospital CenterNew York City, NY
    Residency in Internal Medicine • 1997 - 2000


  • NYU-Bellevue Hospital Center-Manhattan VA HospitalNew York City, New York
    Fellowship in Gastroenterology • 2000 - 2003

Awards & Honors  

  • Alpha Omega Alpha
    New York University School of Medicine • 1997

  • Phi Beta Kappa
    New York University College of Arts and Sciences • 1993

Hospital Affiliations

  • John T. Mather Memorial Hospital

Languages Spoken  

  • English

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