Loveland Doctors

Dr. Daniel Langer
Dr. Langer was raised in Colorado and received his undergraduate degree from Metropolitan State College of Denver in 1996.  In 2001, he received his medical degree from the University of Colorado Health Sciences Center and was elected to the Alpha-Omega-Alpha medical honor society.  He completed his internal medicine internship and residency, also at the University of Colorado, in 2004.  From 2004-2008 he received fellowship training in Gastroenterology and Hepatology at the Mayo Clinic in Rochester, Minnesota.  He focused on the study of liver disease and has published several peer-reviewed papers.  He received the J. Arnold Bargen award for excellence in research.  He then moved back to Colorado to join Centers for Gastroenterology in 2008.  He is board certified in Internal Medicine and Gastroenterology.  He is a member of the American Gastroenterological Association, American College of Gastroenterology, and the American Society for Gastrointestinal Endoscopy. Dr. Langer joined Centers for Gastroenterology in 2008.


Dr. Crystal North
Dr. Crystal North received her B.S. in Molecular and Cellular Biology from the University of Alaska in Fairbanks. She earned her medical degree from Midwestern University in 2002 and completed her internal medicine residency training in 2005 at Providence St. Vincent Medical Center in Portland, OR.  She finished her Gastroenterology fellowship training at Midwestern University in Chicago in 2008. In the previous year, Dr North was the inpatient Gastroenterologist at North Colorado Medical Center in Greeley, CO. She is board certified in Internal Medicine and Gastroenterology and is a member of the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy and the American College of Gastroenterology. In addition to enjoying the full spectrum of Gastroenterology, Dr North has a particular interest in celiac disease, and is the medical advisor for the Northern Colorado Chapter of the Celiac Sprue Association. In addition to general gastroenterology, she specializes in the workup and treatment of fecal incontinence, esophageal disorders, and providing screening for colon cancer. She enjoys hiking, gardening and other outdoor activities with her husband and Golden Retriever. Dr. North joined Centers for Gastroenterology in September 2009.


Dr. Stephen Sears
Dr. Stephen Sears received his BS from James Madison University in Harrisonburg, VA. He earned his medical degree in 1995 from the Uniformed Services University of the Health Sciences in Bethesda, MD. Dr Sears completed his internship and residency at Eisenhower Army Medical Center in Augusta, GA. He then finished his Gastroenterology Fellowship at Brooke Army Medical Center in San Antonio, TX in 2001. Dr. Sears served an additional seven years in the Army, concluding his military career as Chief of Gastroenterology at Madigan Army Medical Center in Tacoma, WA. He is a member of the American College of Gastroenterology and the American Society of Gastrointestinal Endoscopy. Dr. Sears joined Centers for Gastroenterology in 2008.


Dr. Lewis Strong
Lewis Strong, M.D., has been practicing gastroenterology in Loveland since 1991. Dr. Strong is Board Certified in Gastroenterology. He recertified in 2001. Dr. Strong earned his medical degree from Case Western Reserve University School of Medicine in Cleveland, OH. He completed his residency program at the University Hospitals of Cleveland. He received his Fellowship training in Gastroenterology from Case Western Reserve University School of Medicine. He has a particular interest in digestive diseases, diseases of the liver and colon cancer screening. In addition to keeping up with his busy medical practice, Dr. Strong enjoys bicycling, snow skiing and woodworking. He also speaks fluent French. Dr Strong has been a part of Centers for Gastroenterology since January, 2007.