# JKAN Gastroenterology PLLC > JKAN Gastroenterology PLLC is a Lower Manhattan-based practice specializing in gastrointestinal care under the direction of board-certified gastroenterologist Dr. Nancy Lau. Dr. Lau treats various GI disorder symptoms, including abdominal pain, gas, bloating, constipation, diarrhea, and vomiting, utilizing innovative diagnostic procedures like colon cancer screening, colonoscopies, and endoscopies. The practice addresses conditions such as Celiac disease, fatty liver disease, gallstones, hemorrhoids, GERD, irritable bowel syndrome, liver disease, pancreatic disease, and inflammatory bowel disease, focusing on patient-centered care to optimize gastrointestinal health. Disclaimer: This information is for informational purposes only and does not constitute medical advice. ## Key Pages - [JKAN Gastroenterology PLLC Homepage](https://jkangastro.com/): General information about the practice. ## Booking & Contact - [Schedule an Appointment](https://jkangastro.com/schedule) - [Contact Us](https://jkangastro.com/contact-us) - [Patient Registration](https://jkangastro.com/registration) - [Patient Visit Information](https://jkangastro.com/visit) - [Pay Online](https://jkangastro.com/pay-now) ## Providers - [Nancy Lau, MD](https://jkangastro.com/provider/nancy-lau-md) ## Services - [Abdominal Pain](https://jkangastro.com/service/abdominal-pain) - [Celiac Disease](https://jkangastro.com/service/celiac-disease) - [Colon Cancer Screening](https://jkangastro.com/service/colon-cancer-screening) - [Colonoscopy](https://jkangastro.com/service/colonoscopy) - [Constipation](https://jkangastro.com/service/constipation) - [Endoscopy](https://jkangastro.com/service/endoscopy) - [Fatty Liver Disease](https://jkangastro.com/service/fatty-liver-disease) - [GERD (Gastroesophageal Reflux Disease)](https://jkangastro.com/service/gerd-gastroesophageal-reflux-disease) - [Inflammatory Bowel Disease](https://jkangastro.com/service/inflammatory-bowel-disease) - [Irritable Bowel Syndrome](https://jkangastro.com/service/irritable-bowel-syndrome) - [Liver Disease](https://jkangastro.com/service/liver-disease) ## Policies - [Accessibility Statement](https://jkangastro.com/accessibility-statement) - [Privacy Statement](https://jkangastro.com/your-privacy) - [Terms of Use](https://jkangastro.com/our-terms) ## Patient Resources - [Fiber for Constipation](https://tcoyd.org/2023/04/fiber-carbs-with-extra-benefits/) ## Blog - [Blog Archive](https://jkangastro.com/blog-archive)