Dr. Joshua Gailey grew up in northern Nevada. He attended Brigham Young University-Idaho and graduated Suma Cum Laude in 2005 with his Bachelor of Science in Architecture and History. After completion of his undergraduate degree, Dr. Gailey attended Idaho State University to complete his dental school prerequisites.

Dr. Gailey graduated Magna Cum Laude with his Doctor of Dental Medicine (DMD) degree in 2011. After graduation, Dr. Gailey began Army Active Duty service. He served for a total of nine years in the Dental Corps. While in the Army, Dr. Gailey completed his endodontic residency and graduated with a Master of Science and Certificate in Endodontics in June 2017. In 2019 Dr. Gailey received Board Certification from the American Board of Endodontics.

Dr. Gailey currently lives in Lebanon, New Hampshire with his wife and children. His hobbies include woodworking, reading, and spending time with his family. He is licensed in New Hampshire and Vermont. He is a member of the American Association of Endodontists and a diplomate of the American Board of Endodontics.