About Us

Home >> About Us

Dr. Jon Feller

Dr. Jonathan Feller spent his childhood observing and eventually working for his father who is an Orthodontist. This is were his love of helping others discover beautiful healthy smiles began. He is continually amazed by how life changing dentistry is for all. Dr. Feller received his degree from the University of the Pacific Arthur A. Dugoni School of Dentistry and continues to pursue the best education opportunities to help those he serves have the best treatment available.

Dr. David Poelman

Dr. David Poelman has been practicing dentistry since he opened his first practice in Chandler, Arizona in 2002. He earned his bachelor’s degree from the University of Utah and his Doctor of Dental Surgery from Case Western Reserve University’s School of Dental Medicine.


Dr. Poelman has partnered with and worked as a mentor to many associates over the years helping to grow their clinical and business skills alike. He has pursued a significant amount of continuing education over the years in various applications; in particular, dental implants.


Implants are one of the facets of dentistry that Dr. Poelman enjoys most. He took his first implant course over 15 years ago and hasn’t stopped learning and improving his techniques. He has been a Faculty Club member at Spear Education in Scottsdale, AZ, founded the Phoenix Implant Institute and Olympia implant institute where he helps train other Drs learn to do implant dentistry.


Dr Poelman is excited to spend time in The Dalles and to be a part of Columbia River Dental along with Dr Feller in helping our patients enjoy the benefits of the best dentistry available.


In his spare time Dr. Poelman enjoys spending time with his wife, son, and 4 daughters waterskiing, golfing, playing basketball, and enjoying all things food! You might also find him at home helping take care of their animals that include horses, goats, chickens, dogs and cats.


Hi, I’m Terrie. I’ve always lived in The Dalles. Married a great local guy Devin. I have a beautiful family. 2 daughters, 2 son in laws & 4 of the best grand babies ever!
I’ve been in the dental field for over 30 years. As a Dental assistant to an Oral surgery assistant to currently an Office manager of this great office.
I love being able to help care for you & your family as I want my family cared for!
Love working with our team and our great patients.

Mary Dodd Martinson, BS RDH

As an organized and compassionate Dental Hygienist, I love using my friendly nature and professional expertise to help give patients a better smile. I also enjoy sharing this vision with individuals who work efficiently and accurately as a dynamic team of dental professionals.


Choosing a dentist is a big decision. Columbia River Dental Dental offers services and amenities that make us the clear choice for you and your family. Our Geismar dental office works with patients of all dental complications. 

Make An


Choosing a dentist is a big decision. Columbia River Dental Dental offers services