Meet Our Doctors and Staff at Collier Dental
in Oxford, Pontotoc, and Batesville, MS


John A. Collier, DDS

General Dentist

Dr. Collier received undergraduate degrees in biology and chemistry from Delta State University. He earned his dental degree from the University of Tennessee School of Dentistry, then completed a one-year general practice residency at Memphis V-A Medical Center. Dr. Collier has been in private practice since 1996 and is an active member of the Academy of General Dentistry, American Academy of Implant Dentistry, Mississippi State Dental Association, American Association of Hospital Dentists, and American Orthodontic Society. Recently, he was awarded a fellowship by the American Orthodontic Society. Visit us to learn what Dr. Collier can do for your smile.

Larissa G. Hammer, DMD

General Dentist

Dr. Hammer received an undergraduate degree in Biology and Chemistry from the University of Tennessee. She earned her dental degree from the University of Connecticut, then completed an advanced education in general dentistry residency at the University of Alabama. Dr. Hammer is an active member of the Mississippi Association of Women Dentists, The American Dental Association and the Mississippi Dental Association. She enjoys treating dental needs of all ages and being a mother to three beautiful children.

Shelly L. Osborn, DMD

General Dentist

Dr. Osborn received an undergraduate degree in Biology from the University of Mississippi and is a Sally-McDonald Barksdale Honors College graduate. She attended the University of Mississippi Medical Center School of Dentistry, where she recieved her Doctor of Dental Medicine degree. She is a member of the Mississippi Dental Association, American Dental Association, and Mississippi Association of Women Dentists. She enjoys attending the Ole Miss sporting events in her spare time.

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