Located in Ballard, Washington
A dental office experience is only as good as it’s team members, and at The Tooth Ferry, we pride ourselves on hiring the very best. Dr. Posthuma was eager to hire assistants who she had known for many years and bring them together at her own office when assembling her “dream team”. Her assistants agree with her philosophy of treating each and every child with kindness and respect, and allowing the time needed to work at the child’s pace, explaining and teaching as they complete each part of a child’s appointment.
Megan and her husband Josh collaborated to build The Tooth Ferry from the ground up- it is truly a labor of love and their family business. Their mission is to provide high-quality, easily accessible dental care in an environment in which you and your children feel heard and respected. Dr. Posthuma and her team treat every patient as if they were family. Dr. Posthuma does not believe her job is to diagnose and fill cavities. She sees her profession as a calling- one of building relationships with children and families and providing them with positive associations with dental care that will last for a lifetime. She is an educator regarding oral health, which she believes to be more central to overall health of the body than previous generations have ever realized.
Meet Our Team
Megan K. Posthuma, DDS
Founder and Pediatric Dentist
Dr. Posthuma loves what she does, and it shows! Her ultimate goal is for her patients to enjoy coming to the dentist and for parents to leave feeling they have unsurpassed trust in her as a care provider.
She is an active member of two study clubs, and has a love of life-long learning. She is always eager to address all questions regarding pediatric oral health and growth and development, such as questions about growth of the orofacial complex, ankyloglossia (tongue-tie), pediatric obstructive sleep apnea, tooth grinding, speech development, non-nutritive sucking habits (thumb, pacifier), fluoride exposure, and ideal timing for orthodontic intervention.
Christine Njoroge, RDA
Dental Assistant
Christine chose pediatric dentistry because she has always enjoyed working with kids – from time as a camp counselor, to babysitting all over the Seattle area. She enjoys building confidence within kids and making sure they are well cared for when they are at the dental office. Christine is a Seattle native and Ingraham Highschool grad. She is proud to be a dental assistant and truly loves working in the dental field.
Josh Posthuma, MBA
Founder and Business Manager
Josh was raised in Seattle and earned an MBA from the University of Washington. His professional experience includes serving as a financial consultant for the Alaskan Way Viaduct Project, Director of Philanthropic Operations with Vulcan, and most recently, Business Manager for Evergate Stables.
Josh has always enjoyed community engagement including roles as the treasurer of the Phinney Neighborhood Association, treasurer of the PTA at Cascadia Elementary School, and board member of the Seahawks Family Foundation. He has also enjoyed coaching his kids’ soccer team, the Cascadia Dragons, for the past three years.
In early 2019, Josh brought his diverse resume in business operations management together with Megan’s knowledge of pediatric dentistry to collaborate on the creation of The Tooth Ferry. Josh’s varied professional background combined with his love of creating experiences that are fun for children
have helped make The Tooth Ferry the unique space it is today.
Outside of his work, you’ll find him spending time with his family and raising his three boys in the Ballard neighborhood that he and Megan call home. In his free time, he loves hiking with their dog Ruth, camping, boating, fishing, and enjoying all the natural beauty of the Pacific Northwest.