Meet Our Wonderful Dentists


Otto Hanssen DDS

Otto Hanssen DDS

University of Washington

 Dr. Otto Hanssen was born and raised in Bellingham, Washington. He undertook his undergraduate studies at Western Washington University with an emphasis in Chemistry.  Dr. Hanssen then studied and received his dental degree from the University of Washington in 1979.  After a long dental practice partnership, he founded Cottage Lake Family Dentistry in 1992.  Dr. Hanssen is active in most areas of general dentistry with a concentration on more complex reconstructive cases.  He enjoys spending time with his lovely wife of 28 years and their three grown children, traveling to warmer climates, and boating in the Puget Sound San Juan Islands.

Patricia Nguyen DDS

Patricia Nguyen DDS

University of Minnesota

  Dr. Patricia Nguyen was born and raised in Edmonton, Alberta, Canada and completed her undergraduate studies at the University of Alberta in 2010. She attended the University of Minnesota where she received her DDS degree in 2014. Dr. Nguyen then completed a postgraduate residency program in Advanced Education in General Dentistry at the University of the Pacific in Union City, CA in 2015. She moved to Washington shortly there after and join Cottage Lake Family Dentistry. Dr. Nguyen is a winter sport fanatic and enjoys being close to the mountains.  

Gregory Wang DDS

Gregory Wang DDS

NYU College of Dentistry

Dr. Gregory Wang was born and raised in East Bay California. After graduating from University of California, Los Angeles with a degree in Physiological Science, he traveled across the country to excel at NYU College of Dentistry. He completed a postgraduate General Practice Residency at NYU Langone in Brooklyn, NY in 2014. Striving to provide patients with utmost quality of care through continuing education, Dr. Wang is a member of Academy of General Dentistry and received his Fellowship in 2017. Dr. Wang is fluent Mandarin and conversational Spanish. When not practicing dentistry, he and his wife enjoy outdoor activities such as hiking, tennis, and skiing.

Casey Jacobsen DDS

Casey Jacobsen DDS

University of Washington

Dr. Casey Jacobsen was born and raised in a small town in Montana. After high school she completed her undergraduate coursework at Montana State University in 2010. After working as a dental assistant for several years, Dr. Jacobsen attended the University of Washington to receive her DDS degree in 2016. Dr. Jacobsen then completed a postgraduate General Practice Residency at the University of Washington. When not in the office, she enjoys spending time with her fiancé and exploring all the Pacific Northwest has to offer.