MARK C. OBERHEIM, DMD, MDS, PC


Dr. Mark C. Oberheim graduated from Mifflinburg High School. He attended the University of Pittsburgh to earn his B.S., D.M.D., MPH and M.S. in orthodontics.


Dr. Oberheim's Master's thesis work was published in the Journal of Dental Research. His thesis was also used as a chapter in a text book published by the Center for Human Growth and Development at the University of Michigan. (Growth Modification: What Works, What Doesn't and Why – Volume 35 by Jim McNamara, pg. 87-100)


After graduation in July of 1999, Dr. Oberheim purchased Dr. George Durrwachter's practice and moved to the Williamsport area. In 2001 Dr. Oberheim moved the practice to the present location.


Dr. Oberheim lives in Montoursville with his wife Brenda and 3 children at home. 

Highly trained Oberheim Orthodontics staff specializes in the finest orthodontic care.



Each member of our staff is highly trained to assist you throughout your orthodontic experience. Our team is dedicated to providing you with the finest orthodontic care in the most comfortable setting.

Meet our staff

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JULIA LILLEY

Orthodontic Assistant

Julia has been with Dr. Oberheim since 2017.

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HEATHER KRINER

Orthodontic Assistant 

Heather has been with Dr. Oberheim since 1999 and has 20 years of combined experience. 

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WENDY ECKARD

Orthodontic Assistant

Wendy has been with Dr. Oberheim since 2007 and has 30 years of combined experience.

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MARY BOWER

Administrative Assistant

Mary has been with Dr. Oberheim since 2004 and has 37 years of combined experience.

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KRYSTLE PFLEEGOR

Administrative Assistant 

Krystle has been with Dr. Oberheim since 2015 and has 13 years of combined experience. 

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