About Xcelerated Orthodontics | Orthodontist Portsmouth, NH

About the XO team

We are New Hampshire’s Platinum Invisalign provider – located on the gorgeous seacoast in Portsmouth. With over 35 years in orthodontic practice, we offer our patients comfortable, top-of-the-line care. Come visit our office and get started with your new smile today!


Dr. Gregory Baker Dr. Gregory Baker Dr. Gregory Baker

Dr. Gregory Baker

DDS, Orthodontist

I’ve been practicing in New Hampshire for over 35 years and it is my pleasure to provide my patients with top-of-the-line orthodontic care. As a firm believer in continuing education, I have become a Platinum-level Invisalign provider, am a member of the Roth Williams International Society of Orthodontics, and serve as associate clinical professor of orthodontics at Harvard School of Dental Medicine. I am passionate about learning new procedures and techniques to the benefit of both my patients and my students.

Dr. Donna Galante

Dr. Donna Galante

DMD, Orthodontist

Serving as a diagnostic consultant* for XO, Dr. Galante is a board-certified orthodontist in private practice in California for over 30 years. She is also a clinical instructor and faculty member for Align Technology – the makers of Invisalign – and has lectured nationally and internationally to over 20,000 doctors and their teams.

*Dr. Galante is not licensed to practice in NH and does not treat NH patients.