Physician Detail

Michael Steven Karasik, MD


Connecticut GI, PC


Gastroenterology, Board Certified < Accepting new patients for this specialty
Internal Medicine, Board Certified < Not accepting new patients for this specialty

Areas of Interest

Achalasia, Advanced Interventional Endoscopy, Benign Esophageal Disorders, Biliary Disease, Cancer Screening, Cholangiocarcinoma, Colon Cancer, Colonoscopy, Colorectal Cancer Screening, Endoscopic Anastomotic Stricture Repair, Endoscopic Fistula Repair, Endoscopic Gastrojejunostomy, Endoscopic Mucosal Resection, Endoscopic Retrograde Cholangiopancreatography (ERCP), Endoscopic Submucosal Dissection (ESD), Endoscopic Suturing, Endoscopic Ultrasound, Endoscopy, Esophageal Cancer, Esophageal Motility Disorders, EUS-Guided Pancreatic and Biliary Rendez-vous Procedures, Gastric Cancers, Gastrointestinal Endoscopy, Pancreas Disease, Pancreatic Cancer, Pancreatic Cyst Gastrostomy, Pancreatic Necrosectomy, Peroral Endoscopic Myotomy (POEM), Zenker's Diverticulum

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Karasik, Michael Steven, MD

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Important information we want to share with you about advances in the fight against colon cancer.

Dr. Michael Karasik, a Gastroenterologist at Hartford Hospital…and the only physician in the state performing complex procedures to remove deep tumors in the gastrointestinal tract.

Q. First, tell us all about these less invasive procedures…what are they?

A. Endoscopic submucosal dissection, ESD, is actually endoscopic surgery. In contrast to more typical surgery, however, there is no cutting on the outside and so no pain and it is organ sparing so there’s no change in bowel function. Patients spend only 1 day or less in hospital. Best of all it is equally curative for early cancers and complex polyps (large and difficult to remove). The same techniques can be used to cure early esophageal and early gastric cancers, as well.

Q. Can you tell us how they are performed?

A. A variety of catheters are passed through a colonoscope (for the colon) or an endoscope (for the esophagus and stomach). We have a special hollow needle catheter through which we can inject fluid and also send a variety of electric currents. The fluid we inject separates the lesion from the underlying muscle and then a micro-surgical dissection is performed with the needle using the current. The key to this technique being able to actually cure cancers is that it allows a tumor to be removed in 1 piece. Patients can expect to feel no different than after having undergone a routine colonoscopy.

Q. How common is it to find tumors in the gastrointestinal tract?

A. We used to say that 30% of people undergoing colonoscopy would have precancerous colon polyps. We now know it is far more than that and in the past decade has seen a dramatic increase in colon cancer in persons in their 30’s and 40’s.

Q. What is the recovery like for patients?

A. ESD is organ-sparing but the gut wall is made thinner and takes a few weeks to heal. To protect it from during this period we usually close the site with clips or sutures and do limit weight lifting activities for the first 3-4 weeks.

If you would like to learn more call 1-833.925.0096.



Medical School

  • University of Connecticut School of Medicine 1986 MD


  • Northwestern University Medical Center 1989, Internal Medicine


  • Boston University Medical Center 1991, Gastroenterology


  • Tufts University 1982 BS

Insurance Accepted*

Aetna, Anthem, BCBS Medicare, CarePartners of Connecticut, Cigna Healthcare, Colonial Cooperative Care, Community Health Network of Connecticut, Inc., Connecticare, Connecticare Commercial, Connecticare Medicare, Corvel, Coventry, Essence Healthcare, Evercare, First Health Group Corp., Focus, Harvard Pilgrim, Health Connecticut, Health Direct, Health New England, Healthy Connecticut, HMC/ Northeast Healthcare, Medspan Commercial, Medspan Medicare, Multiplan, Northeast Health Direct, One Health Plan/ Great-West Healthcare, Oxford Health Plans, Prime Health Services, Private Health Care Systems, Inc., Senior Whole Health, United Healthcare, WellCare of Connecticut, Inc.

*This information is subject to change at any time. Please check with your insurance provider before scheduling your appointment or receiving services to confirm they are a participating member of the Hartford HealthCare network.