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Mary K. Len, MD

Mary K. Len, MD

Gastroenterology, Inflammatory Bowel Disease

On staff since November 1998

Academic Title: Associate Professor


PatriciaAuburn, WA01.23.13
Dr. Mary Len is a wonderful pediatric GI doctor who is everything you could hope for when seeking treatment for your child. She is a very attentive listener and highly effective communicator - both so important in her line of work. At the very first visit she quickly put my son (and me - the parent) at ease and established a direct connection with her patient that made it possible for him to talk frankly with her about his medical issues every time he saw her. She always showed genuine concern and kindness, and delivered gentle, thoughtful care. She exhibited great medical skill in the diagnosis, treatment, monitoring and follow-up care for my son, who first saw her at age 11. Thanks to Dr. Len, my 23-year-old son has been in remission for so many years now and I am very grateful to her!
LuwanaOlympia, WA.06.18.12
Dr. Len is a caring, hard-working doctor. She thinks of every possible solution to your child's problem until she comes up with something that works. She gives options instead of insisting on methods that you aren't comfortable with. She helped our daughter get rid of her ng tube without having to go the g-tube route. We have been so thankful for her and her excellent advise for our daughters GI care.
Recommend Dr. Mary Len


Board Certification(s)
Pediatric Gastroenterology
Pediatrics, UCLA Medical Center, Los Angeles
Gastroenterology, UCLA Medical Center, Los Angeles

Awards and Honors

Award NameAward DescriptionAwarded ByAward Date
Phi Beta Kappa 1981


Infantile Crohn disease presenting with diarrhea and pyoderma gangrenosum.
Pediatric dermatology , 2006 Jan-Feb: 43-8


Presentations TitleEventLocationDate
Celiac Sprue LectureOlympia, WAFeb. 2005

Primary Office

Seattle Children's Olympia
CO - Suite 140
615 Lilly Rd NE
Olympia, WA 98506

Additional Offices

Seattle Children's Federal Way
CF - Suite 300
34503 9th Ave S
Federal Way, WA 98003

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