Contact Us!

935 SW Higgins Ave.
Missoula, MT 59803

We are on the corner of High Park and SW Higgins. Above Massage Envy next to Romeos


Monday - Thursday
8 AM - 5 PM
Closed Friday


About the Doctor



John graduated from the University of Oregon, School of Dentistry in 1980 and since then has been practicing in Missoula. He is a member of the MDA and ADA. Dr. Spierling has two daughters and two grandchildren. He loves the outdoors and enjoys tennis, hockey, skiing, rafting and hunting. John is also a BIG TIME Griz Fan!!! 

John Spierling, DDS

Front Office



Karen has lived in Montana since 1995 and currently resides in Missoula with her spouse. Her dental experience started in 1975, working for a dental lab.  She has worked for Dr. Spierling since 1999 as Office Administrator. She loves floating the rivers, camping, cooking, sewing, crafts, reading and traveling. Karen takes pride in her family, three daughters, several extended family members and 16 grand kids. Life is very full of blessing and adventures!


 Karen Fowler 


Leslie makes her home in Stevensville with her husband and three cats. She has worked for Dr. Spierling as Administrative assistant since August 2012. She and her husband are award winning gardeners! Leslie loves camping, canoeing, hiking and cooking for her family and friends. 

 Leslie Chandler




Leanna is a Montana native. She earned her degree from Carroll College and has been practicing dental hygiene in Dr. Spierling’s office since 1992. She has four children, two boys and two girls. Leanna enjoys camping, hiking, floating and doing crafts.   

 Leanna Layman


Diana grew up in central Florida.  After high school graduation she went into the U.S. Air Force as a photo processing technician.  There she met her husband Gerry, who hails from Montana.  After her military position, Diana became a dental assistant, and then went on to hygiene school.  She loves the people oriented atmosphere that dental offices offer and enjoys providing dental hygiene and education to others. In her spare time, Diana enjoys photography, hiking, canoeing, kayaking, cross country skiing, snowshoeing and traveling.  

 Diana Nielsen


Shelbi moved to Missoula in 2008 and started working for Dr. Spierling shortly thereafter.  She has a BA in Sociology from UC San Diego and completed a BS in Dental Hygiene from OHSU Portland, Oregon in 2001. Shelbi loves spending time with her husband and two daughters skiing, camping, hiking, biking and can never say no to a trail run with friends!

 Shelbi Ascher

Dental Assistants



Beth has lived in Montana since 1989.  She has two Bachelor degrees from the University of Montana. She has been an assistant for Dr. Spierling since 1999. Beth enjoys camping, fly fishing, dancing, swimming and spending time with her family. 

 Beth Fagg


Jen was born and raised mostly in Missoula. She has been in the dental field for almost 25 years. She loves her profession.  She is married with two grown children and one grandson. She enjoys hiking, reading, camping and just being in the outdoors. She is always excited to watch the Griz play football! One of her favorites things are dogs, especially Beagles. She has one at home now.

 Jennifer Verlanic

John Spierling -- 406-728-5100 -- 935 SW Higgins Ave, Missoula, MT  59803