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Welcome to Ostby Orthodontics!

Welcome to Ostby Orthodontics, the orthodontic practice of Dr. Adam OstbyDr. Marlene Ostby, and retired Dr. M.C. “Buddy” Kastrop.

Exciting news!

Ostby Orthodontics is excited to announce that we are moving into a brand new, beautiful building sometime in early 2018!  Our new office at 1601 Zimmerman Trail will replace our current Avenue E location, with beautiful new amenities so that we may serve you better.  Nestled between Billings Ob/Gyn Associates and Ace Hardware, we think you will find this to be an outstanding and convenient location with great accessibility and beautiful views.  The new building will also house our exceptional dental colleagues at Rimrock Pediatric Dentistry and Great Northern Endodontics.

Our Heights location will remain open for business as it has been for almost 15 years!

You can send an online appointment request here, email us at, or call 259-6774.

Our passion is your smile.

At Ostby Orthodontics, we strive to provide our patients with the highest quality of orthodontic treatment in a friendly, yet professional environment.  We emphasize patient education and personalized care, as we strive to gain the trust and respect of each of you.

Many of you will recognize our central Billings facilities as the orthodontic office of Dr. Buddy Kastrop.  We are extremely fortunate and thrilled to be working beside Dr. Kastrop, and we will work together to provide the best orthodontic care possible to the Billings community and beyond, using the most advanced braces and technology.

We also have a second location in Billings called Heights Orthodontics for added convenience for those of you who live or work in the Heights area.

Please contact us or browse our website for more information.

AAO ABO Invisalign