Earning Your Trust with a Smile.

About Us

Dr. J. Brett Mangum – Dentist

J. Brett Mangum, DDS is a 2001 graduate of the University of Michigan’s School of Dentistry. His career includes residency training in General Dentistry, military training and dental experience in the Navy that culminated with a deployment to Iraq in 2004 to 2005 as an officer in charge of a mobile dental team. Dr. Mangum is a recipient of the Fellowship Award from the Academy of General Dentists and completed and Advanced Education in General Dentistry (AEGD) at the Naval Dental Center of the Southwest in 2002.

Dr. James M. Ransdell – Dentist

James M. Ransdell, DDS is a 2005 graduate of Marquette University School of Dentistry. He is a member of the American Dental Association (ADA), Academy of General Dentistry and the Spear Education Faculty Club. He is an experienced and gentle dentist who takes pride in the same philosophy of Mangum Dental of “Earn your trust with a smile”. When not working, Dr. Ransdell enjoys spending time with his wife, Kristin and their six boys. He is a family man who enjoys mountain biking, off-road motorcycling and reading. He is a fun-loving person who makes everyone feel welcome around him. Dr. Ransdell has been with Mangum Dental since 2014 and is a great addition to our dental family.

Dr. Mitchell Grimmer – Dentist

Dr. Mitchell Grimmer is the newest addition to the Mangum Dental family. He is a 2017 graduate of Virginia Commonwealth University School of Dentistry and received his bachelor’s degree in biology at Brigham Young University. He has just moved from his home state of Virginia to be closer to his wife’s family here in Arizona.
Dr. Grimmer believes in creating a strong rapport based on mutual trust and respect. He prides himself on his bedside manner and delivering the gentlest care possible. He appreciates the cosmetic and artistic side of dentistry including his composite veneer layering technique. Most of all, he enjoys restoring a person’s smile and confidence.

When not at work, Dr. Grimmer loves to spend time with his wife and 3 girls. He’s excited to explore, with them, the outdoor life that Prescott has to offer. He also enjoys weightlifting, obstacle course racing, gymnastics, cookie decorating, and playing classical piano.

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