NJ office is moving to a new location on 11/01/2021

140 Sylvan Avenue Suite #101
Englewood Cliffs, NJ 07632
Office Hours:
Tuesday 9am - 6pm  
Thursday 9am - 6pm


Heal your gut!

Dr. Shim strives to provide her patients with very best care in digestive diseases and gastrointestinal endoscopy.

Office Hours
Upper East Side Office
Mon, Wed: 9 am - 4 pm
Fri: 8:30 am - 12 pm
New Jersey Office
Tues: 9 am - 6 pm
Thurs: 9 am - 6 pm

About us

Get The Best Care From Our Team

Jan J. Shim, MD, is a premier gastroenterology practice that takes a whole-body wellness approach. At her main office on the Upper East Side of Manhattan, New York, and an additional location in Fort Lee, New Jersey, board-certified gastroenterologist Dr. Shim and her team provide comprehensive gastroenterology care.

Dr jan j shim

Your Health is Our Main Priority.

Dr. Shim is board certified in gastroenterology. She has been in private practice for 25 years and sees patients at two offices, Manhattan, New York and Fort Lee, New Jersey. Her practice is limited to gastroenterology and hepatology. She is a member of American Society of Gastrointestinal Endoscopy (ASGE)

Our Specialties


Examples of the gastrointestinal disorders Dr. Shim treats.

Celiac disease

Celiac disease is an autoimmune disease involving the small intestine in which people cannot tolerate a protein called gluten.

Colon Cancer

More than 100,000 Americans develop colorectal cancer every year, and it’s the second-most common cause of cancer deaths among men and women combined.


Colonoscopy is a highly effective colon exam. In fact, it could save your life by detecting colon cancer early or removing potentially precancerous polyps.


Virtually everyone suffers from constipation sometime during their life, but when it continues long-term and causes serious discomfort, it’s time to get help.

Crohn's Disease

Inflammatory bowel diseases like Crohn’s disease and ulcerative colitis affect as many as 1.6 million Americans.

Diverticular Disease

Diverticulosis refers to the presence of small out-pouchings (called diverticuli) or sacs that can develop in the lining of the gastrointestinal tract.

Early gastric cancer (EGC) screening

Cancer of the stomach, or gastric cancer, is a disease in which stomach cells become malignant (cancerous) and grow out of control, forming a tumor.


An endoscopy is a minimally invasive procedure to examine your digestive tract for disease or irregularities.

Fatty Liver

Fatty liver disease is a common condition that can develop into serious inflammation, scarring, and liver failure.

Gastroesophageal Reflux Disease (GERD).

When you have weeks of acid reflux and heartburn and episodes more than twice per week, you may have developed gastroesophageal reflux disease (GERD).


Heartburn is associated with acid reflux, a condition in which stomach acid flows back up into your esophagus and causes burning in your chest.


Hemorrhoids are swollen veins in the lowest part of your rectum and anus.


Hepatitis is a disease that causes inflammation of the liver. It can be either acute (lasting less than six months) or chronic (lasting more than six months).

Peptic Ulcer Disease (Ulcers)

Peptic ulcer disease occurs when the stomach acid penetrates the stomach or intestinal lining and causes ulcers, an often painful sore in the lining.

Ulcerative Colitis

If your immune system goes into overdrive, it can trigger ulcerative colitis, a disorder causing cramps, diarrhea, and other uncomfortable symptoms.

Request an Appointment

Request online or call us for an appointment.


Hear What They Say About Us

Emma Vaiserfirov

Dr. Shim took her time explaining things to me in as much detail as I could handle, and I know what to expect from our next meeting, depending on how I respond to her suggested treatment. Thanks Dr.!


Catherine LaSota

I appreciated Dr. Shim's humor and matter-of-factness. I felt like I was talking with someone very knowledgeable and with the ability to laugh.


Peter Stockman

Dr. Shim is excellent, as is her staff.  I think Dr. Shim has done all my colonoscopies for the past 20 years at least.  Highly recommend.


Elaine Camin

I appreciate Dr. Shim's direct-yet-sensitive style of delivery. My appointments are very thorough and I have never felt rushed. I just told the office today she reminds me of an "auntie"



Pleasant and Professional. Nice combination. I definitely recommend.


Pierre Restel

She has amazing bed side manners, a great staff, and she is very helpful and personable, and professional.  I need to leave her practice since I'm moving out of state and I will miss her as my gastroenterologist.  I have ulcerative colitis and felt completely secure in her and her staff's care.  I highly recommend her practice.



Some of the Insurances We Accept

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Office Hours
Upper East Side Office
Mon, Wed: 9 am - 4 pm
Fri: 8:30 am - 12 pm
New Jersey Office
Tues: 9 am - 6 pm
Thurs: 9 am - 6 pm

Visit Us

New York

New Jersey

Westside gi llc

  • 619 West 54th Street, 8th floor
    New York, NY 10019

Hudson Crossing ASC

  • 2 Executive Dr. Fort Lee, NJ 07024

New York City Office

New Jersey Office