Welcome to Digestive Disease and Endoscopy Center, PLLC,
Your Gastroenterologists in Silverdale, WA

Complete Digestive Care

We pride ourselves in providing complete digestive care for our patients. This includes evaluations and examination from our providers. If necessary, there is an ambulatory surgical center for our providers on site for routine procedures to assist in providing the highest level of wellness our patient can achieve.

We Believe In

  • Whole-body health care
  • Lifestyle medicine
  • Optimizing health through diet
  • Health optimization
  • Exercise
  • Nutraceutical support
  • Hormone modulation
  • Lifestyle modification

“Digestive Disease and Endoscopy Center provides care and treatment for a variety of gastroenterological issues. Through our providers, staff and facilities, our patients are provided with both preventative/wellness care, acute care and chronic care for several gastrointestinal disease processes”

– Narendra Siddaiah, MD, Gastroenterologist

Contact Us

Call our practice today!

Meet Our Doctors

  • Dr. Pankaj Sharma

    Dr. Sharma is the founding member (1982) and continues an active medical practice. He graduated in 1972 from Gajara Raja Medical College, Gwalior, India, followed by Internship. He completed Internal Medicine Residency in Chicago, Illinois and Gastroenterology Fellowship at the University of Washington, Seattle and at the Fred Hutchinson Cancer Care and research center, Seattle, WA. During this time, he published several research papers in Gastroenterology and Bone Marrow transplantation.

  • Dr. Yuen San Yee

    Dr. Yuen San Yee graduated from the Southern Illinois University School of Medicine in 1983. He also completed a residency in Internal Medicine at the Southern Illinois University Hospitals in 1986. Dr. Yee received advanced fellowship training in Gastroenterology with a focus in Therapeutic Endoscopy, Heptology, and Liver Transplantation at the Medical College of Virginia in 1989. He served as Clinical Professor in Richmond until 1991, when he started his private practice in Bremerton.

  • Dr. Naren Siddaiah

    Dr. Siddaiah graduated from Bangalore University, India, completed Internal Medicine residency at St. Francis Hospital, Evanston, Illinois and Gastroenterology Fellowship at the University of Mississippi in 2006. Dr. Siddaiah has graduate education in microbiology and cellular immunology, practice experience in Internal Medicine, Critical care and Emergency Medicine and was a Hepatology research fellow at the University of Washington.


  • "Dr. Adike, Dr. Sharma, Thanks for the pleasant experience during my time at the center for a colonoscopy. Staff were efficient and professional. Also, the whole process seemed to take less time than we had expected. And I think this was the first time I’d received a written report about the procedure results before leaving. Remarkable."
  • "I'm finally able to enjoy exotic foods with the people I love."
    Stephanie De Leon
  • "I feel better than ever about my stomach."
    Jennifer R.

Hours of Operation

Our Regular Schedule

Map and Location


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm





Our Location

Find us on the map