Meet The Team

MEET THE DOCTOR

MARK C. OBERHEIM, DMD, MPH, MDS

Dr. Mark C. Oberheim’s journey in started at Mifflinburg High School and took him to the University of Pittsburgh, where he racked up an impressive list of degrees - a B.S., a Doctor of Dental Medicine (DMD), a Master of Public Health (MPH), and a Master of Dental Science (MDS) in Orthodontics.

Dr. Oberheim grew up around orthodontics. As a teenager/young adult, he spent time in his father’s practice in Lewisburg, observing patient care and even helping to make appliances. Dr Oberheim and his brother both followed in their father’s footsteps and grew their own orthodontic practices.

Dr. Mark C. Oberheim’s journey started at Mifflinburg High School and took him to the University of Pittsburgh, where he racked up an impressive list of degrees – a B.S., a Doctor of Dental Medicine (DMD), a Master of Public Health (MPH), and a Master of Dental Science (MDS) in Orthodontics.

Dr. Oberheim grew up around orthodontics. As a teenager/young adult, he spent time in his father’s practice in Lewisburg, observing patient care and even helping to make appliances. Dr Oberheim and his brother both followed in their father’s footsteps and grew their own orthodontic practices.

His Master’s thesis was published in the Journal of Dental Research and later featured as a chapter in Growth Modification: What Works, What Doesn’t, and Why (Volume 35, by Jim McNamara, pp. 87–100), courtesy of the University of Michigan’s Center for Human Growth and Development.

In July 1999, Dr. Oberheim purchased Dr. George Durrwachter’s practice in Williamsport, then shortly after, built a new office in Montoursville where he is currently located. Over the past 26 years, Dr Oberheim and his staff have had the privilege of treating over 10,000 patients in the Lycoming County area.  His office has won the Williamsport Sun Gazette’s “Reader’s Choice Award” for best orthodontic practice for 9 years running since 2016. 

Outside of crafting smiles, Dr. Oberheim enjoys life with his wife Brenda and their 5 children together, with the two youngest boys being very active and living at home. They enjoy supporting their sons in their wrestling competitions, and lots of outdoor activities such as fishing! Dr. Oberheim is also a big Pittsburgh sports fan, he loves the Penguins, the Steelers and the Pirates!

Meet our staff

MARY BOWER

HEATHER

Front Desk/Administrative Assistant

Heather has been with Dr. Oberheim since 1999 and has 26 years of combined experience.

HEATHER KRINER

MARY

Office Manager

Mary has been with Dr. Oberheim since 2004 and has 42 years of combined experience.
MEGAN

MEGAN

Orthodontic Assistant

Certified as an orthodontic assistant, she’s passionate about patient care and making every visit comfortable and efficient.
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SAMANTHA

Orthodontic Assistant

Certified as an orthodontic assistant, she’s dedicated to providing exceptional patient care and ensuring each visit is smooth.
JENNA

JENNA

Orthodontic Assistant

Certified as an orthodontic assistant, she focuses on delivering compassionate care and creating a positive experience for every patient.