Board Certified
Dr. Steidley achieved the rigorous board certification held by a select portion of endodontists.
Our office
About Lower Columbia Endodontics
Advanced endodontic care, a gentle approach, and a modern office designed around your physical and emotional comfort.
Our mission
Saving natural teeth through advanced endodontic care.
At Lower Columbia Endodontics, we are dedicated to saving natural teeth through advanced endodontic care.
Dr. Steidley combines advanced technology with a gentle approach, helping every patient receive comfortable, expert treatment. We focus on both physical and mental comfort throughout the visit and strive to exceed expectations in everything we do.
Advanced Tech
CBCT imaging, dental microscopes, and precision instruments support detailed diagnosis and treatment.
Patient Focus
The practice prioritizes comfort with thoughtful amenities and a personalized approach to care.
Meet Dr. Steidley
Board-certified care with deep Longview roots.
Dr. Andrew R. Steidley is a board-certified endodontist who has dedicated his career to saving natural teeth through advanced endodontic treatment. Following in his father's footsteps, who practiced dentistry in Longview for many years, Dr. Steidley returned to serve the community where he grew up.
He earned his DMD and completed two additional years of specialized endodontic residency, followed by rigorous board certification. Dr. Steidley stays current with 40 continuing education credits each year, focused on the latest endodontic techniques and technologies.
Outside the office, he enjoys outdoor activities, music, and time with family and their dogs. Patients may be surprised to learn that he played drums in a metal band during high school.
Professional credentialsDMD · MS · Diplomate, American Board of EndodonticsADA · AAE · ABE member
Our technology
Precision supported by modern technology.
We use current endodontic technology to support precise, comfortable treatment. CBCT imaging provides detailed 3D views for diagnosis and treatment planning. Dental operating microscopes allow for high-level precision, while electronic apex locators and advanced file systems support detailed care.
CBCT 3D imagingDental operating microscopesDigital imagingElectronic apex location
Our practice
A focused endodontic office in Longview
Lower Columbia Endodontics opened in 2025 to provide exceptional endodontic care to the Longview community. Located near the post office on Hudson Street, the practice focuses exclusively on endodontic treatment and invests in advanced technology. We believe in treating the whole person, not just the tooth, and prioritize physical comfort and emotional well-being during every visit.
Meet the practice
Experience expert endodontic care.
Contact Lower Columbia Endodontics to schedule a consultation with Dr. Steidley.