Our Studio


Making work based in California since 2017.

Welcome to Keene Dental, conveniently located near Dupont Circle. Here, our professionals know that dental health is not just about white smiles: it’s about having strong teeth and healthy gums. It’s about prolonging the simple joy of eating delicious things! Our mission is to help our patients accomplish these goals in a painless, compassionate, and efficient way.

We aim to educate our patients in a safe environment while offering them necessary comprehensive care. We understand that many people have anxiety about dental treatment, so we created a soothing environment and a scheduling system that never keeps you waiting long. By combining the latest technology with traditional techniques, we give our patients the best care in the District.


David Irwin, founder

David Irwin studied architecture at Pratt Institute where he was awarded the Rosenfeld Travel Grant for Best Senior Thesis Project in 2011.

He has worked under the late architect Lebbeus Woods as well as world renown hospitality architect, David Rockwell and Rockwell Group.




spent his early summers cleaning up the beaches and fishing with his Dad on Long Island. This started the conversation that connects the natural and man-made environments. His love for Graffiti and Hardcore coupled with in his entrepreneurial proclivities called him to attend Art School for Architecture.

In 2011 David observed that a research camp monitoring the world's fastest moving Glacier located in western Greenland, was not fairing well due to longer melt-periods. He then set out to design a new camp, one that works in concert with the changes occurring in these regions.

This project has brought him to meetings with personnel from the United States Antarctic Program, Lockheed Martin and CIRES as well as being part of The Explorers Club's Exploration Expo 2017. After only 5 months into the project it won the Best Final Thesis Project from his architectural alma mater, Pratt Institute.

Currently the project has fabrication partners that include matJack, the world's leading industrial lifting-bag manufacturer and is being prototyped at full-scale. This project aims to form into a non-profit who's mission is to deliver housing at no additional cost to researchers and explorers around the world.

The Terra Projects' work has been featured on LiveScience.com and Dave has been interviewed by Stacey Severn from Neil DeGrasse Tyson's Star Talk Radio.

Derek Shin, RDH

In 2007, Derek Shin earned his dental hygiene associate’s degree at Untitled Technical College right here in Washington, D.C. He started at Keene Dental in 2008. As a District native, he treats all his patients with the familiarity of a neighbor. He’s passionate about bringing considered, quality care to all people, and devotes a lot of time volunteering his services at free clinics. He loves spending time with his dog and watching science fiction films with his partner.

Maja Peterson , Office Manager

Maja earned her associate's degree in Office Administration at Nameless College. In 2000, she moved to Washington, D.C. with her husband and joined the Keene Dental team. She is a scheduling extraordinaire and prides herself in having developed the system that keeps patient wait time under five minutes. As an interior design enthusiast, she took it upon herself to create an inviting atmosphere for our office. She enjoys rock climbing, painting, and video games.