14 Cernon Street Vacaville, CA 95688

Meet Our Dentists

Ornamental Divider

Jason O'Brien, DDS

Dr. Jason O’Brien is a native Californian. He grew up in rural Petaluma where he raised animals including miniature horses, was active in the 4-H, and took part in the local county fair. Dr. O’Brien then attended UC Davis where he graduated in Biochemistry with Highest Honors. After, he attended UCSF School of Dentistry on a UC Regents Scholarship, graduating top of his class and elected to receive the William S. Kramer Award of Excellence by the OKU Dental Honor Society.

Now Dr. O’Brien enjoys being part of the Vacaville community. He has been a member of the Vacaville Rotary Club since opening his office in the town. He strives for excellence in his practice, finding a passion for restoring people’s smiles. Keeping up with the latest techniques and technologies—ranging from cosmetic veneers to full-mouth reconstruction utilizing the latest in digital planning and implant restorations—he takes pride in helping patients to achieve life-changing results.

Outside of the office, Dr. O’Brien and his wife enjoy crafting and woodworking. When not busy on a project, they love being outdoors as often as possible, whether hiking, snowshoeing, kayaking, or archery. Always nearby are their two dogs.

Vagan Tapaltsyan, DDS, PhD

A Berkeley resident since 2010, Dr. Tapaltsyan spent the first part of his childhood in Europe, attending a foreign language immersion preparatory school before moving to the US for high school. He went on to graduate Summa Cum Laude with a BS in Biology from the University of Central Oklahoma, where he was also a member of the sailing team. Continuing on his lifelong path of going West, Dr. Tapaltsyan moved to California for graduate studies and received both his DDS and PhD in Stem Cell and Regenerative Medicine from UCSF, where he currently holds the rank of Assistant Professor and is the Director of Evidence-Based Dentistry Program.

In addition to practicing dentistry and teaching, Dr. Tapaltsyan's research interests include understanding how dental stem cells develop and evolve, which can one day help us regenerate new teeth and bone. He has authored many research articles and book chapters on this subject and lectures internationally.

Dr. Tapaltsyan is a member of the American Dental Association, California Dental Association, American Association of Endodontists, and the American Academy of Laser Dentistry. In his spare time, he enjoys occasional crewing for sailboat races, drawing, hiking, reading, and exploring the great outdoors with his German shorthair pointer Duke.

Ready To Schedule an Appointment or Consultation?

Get In Touch:

14 Cernon Street
Vacaville, CA 95688

(707) 200-1455

Click for driving directions

Office Hours:

Monday: 8AM - 5PM
Tuesday: 8AM - 5PM
Wednesday: 8AM - 5PM
Thursday: 8AM - 5PM
Friday: 8AM - 5PM
Saturday: Closed
Sunday Closed