• About Us

  • Jacob DeVinney DDS

    Amador Dental and Orthodontic is pleased to introduce our new owner Dr. Jacob DeVinney. After many years of "being at the helm," Dr. Sjoberg has found the perfect dentist to compliment his work style and to transition the practice to the next level. While Dr. Sjoberg will continue to offer his professional care on a more limited basis, Dr. DeVinney will be the new full-time owner, as well as a practicing dentist in the office. He is caring, talented and a compassionate professional, who shares our commitment to exemplary dentistry and we are confident you will receive only the highest quality

    After serving six years in the U.S. Navy as a Hospital Corpsman and ENT surgical technician, Dr. DeVinney decided that he would pursue a career change and, luckily for us, he became a dentist.  After his service, Dr. DeVinney went all-in and graduated, Summa Cum Laude, with a Bachelor of Science inBiology from Cal State University, Dominguez Hills. He then went on to earn his dental degree from the Herman Ostrow School of Dentistry of USC.

    Dr. DeVinney is married with two children, with whom he enjoys spending his free time. He and his family reside in Pleasanton and enjoy the community with its friendly people and warmth that is often hard to come by.

    Dr. DeVinney is an exceptional dentist who gives his time to thoroughly explain every dental procedure
    and answer all of your dental health questions. If you are looking for a compassionate, detail oriented
    dentist or would like a caring dentist for your children, Dr. DeVinney is an excellent choice.

  • Craig Sjoberg DDS

    Dr. Craig Sjoberg ("Sho-berg") graduated from the University of the Pacific Dental School in 1980. He began his career as a full-service dentist, including four years of hospital dental surgery. Additionally his strong interest in orthopedics/orthodontics began in 1981. Since then he has treated thousands of cases, including re-treatment of difficult orthodontic and TMJ cases referred by other practitioners.

    Pleasanton, Livermore Dentist | Craig Sjoberg DDS
    Since then his practice has grown many times over and now provides the highest quality of dental care to thousands of patients from Pleasanton, Dublin, Livermore and San Ramon.

    In addition to general dental training, Dr. Sjoberg has thousands of hours of specialized training in Cosmetic Dentistry, Implant Dentistry, Orthopedic facial bone structure guidance for children and treatment of headaches, pain, and other associated TMJ problems.

    Dr. Sjoberg is a member of the International Congress of Oral Implantology, the International Association of Orthodontics, the American Association for Functional Orthodontics and Doctors for Oral Conscious Sedation.

    Flying has always been a passion of his, and today Dr. Sjoberg is working towards earning his full commercial pilot license.

  • Gurshawn Sahota DDS

    Dr. Sahota is a Bay Area Native who pursued his undergraduate studies at University of the Pacific in Stockton, where he graduated with a BS degree in Biological Sciences. He then earned his DDS degree from Arthur A. Dugoni School of Dentistry at University of the Pacific.

    After graduation, Dr. Sahota furthered his education by treating children and complex cases in an Advanced Education in General Dentistry program on the beautiful island of Oahu. He grew up playing soccer, basketball and baseball and is an avid 49ers and San Francisco Giants fan. In his spare time, he enjoys working out, hiking and spending time with his family.

    Dr. Sahota is great with children and is proficient in many phases of general dentistry. He is the perfect combination of professionalism, kindness and gentleness necessary in the dental field.

  • Marzieh Karkhanechi DDS

    Dr. Marzieh Karkhanechi received her Bachelor’s degree from University of California, Davis after which she moved to New York to attended the prestigious New York University dental school where she received her doctor of dental surgery degree (DDS) in 2003. Dr. Karkhanechi gained experience practicing general dentistry for several years prior to entering the Orthodontic residency program at NYU where she completed her post-doctoral education in orthodontics and received an orthodontic specialty certificate. After graduation, she moved back to California and started her orthodontic career in the bay area.

    Dr. Karkhanechi feels extremely privileged to be working in the field of orthodontics where she has the opportunity to create beautiful smiles and ultimately be rewarded by her patient’s satisfaction. Her goal as an orthodontist is to give every child, adolescent and adult a healthy, beautiful smile. Dr. Karkhanechi constantly strives for excellence in her professional life. She embraces todays advanced techniques and stays up to date on the latest orthodontic and dentofcial orthopedic advances by attending numerous continuing education courses and subscribing to relevant professional journals. Her research has been published in leading scientific journal, Angle Orthodontist.

    Dr. Karkhanechi aims to deliver a higher level of care that fits each individual’s needs. She sincerely appreciates the trust her patients and their families place in her and her team to provide their orthodontic care. 


    She is a member of a number of dental organizations:
    American Association of Orthodontists
    Pacific Coast Society of Orthodontists
    American Dental Association
    California Dental Association
    Contra Costa Dental Society

    Dr. Karkhanechi currently resides in Danville with her husband Sam and her two sons Darian and Daniel. When she is not working, she enjoys playing the piano, yoga and going on biking trips with her family.

  • The Team

  • Amy Registered Dental Assistant

    I enjoy my career as a Registered Dental Assistant, and have been fabricating temporary crowns and bridges since 1988. I am bilingual, which allows me to easily communicate with our Cantonese speaking patients. I am an avid golfer and, when I'm not at work, you can be sure to find me out on the nearest golf course. I look forward to getting my 3rd Hole In One in the near future.

  • Angelina Treatment Coordinator

    I’ve been in the dental field since 2006 and I really enjoy helping patients achieve excellent oral health. In my spare time I love watching soccer and spending time with my husband and two kids.

  • Joleen Registered Dental Assistant

    I became a RDA in 1994 and have been working at Amador Dental for the last 12 years. I really enjoy all of my coworkers; they are all a pleasure to work with. My husband and I have a 12-year-old daughter, who I love spending time with. In my free time I also enjoy going on long walks, camping and spending time outdoors with my family.

  • Katheleen Registered Dental Hygienist

    I have been a hygienist for over 20 years. I continue to enjoy helping people achieve great oral health. I can’t imagine having any other career. 

  • Kim Registered Dental Hygienist

    In 1995 I received my BA in English from Cal State East Bay. Later, in 2010, I graduated with honors from Carrington College Sacramento with my AS degree in Dental Hygiene. I love the opportunity to work with and educate people of all ages. When I'm not working, I enjoy spending time and traveling with my husband and two children.

  • Kristen Registered Dental Hygienist

    I have been a dental hygienist for seven years, and have been working in the dental field for 11 years. I enjoy educating patients about both their oral and overall health, as well as helping them to achieve a beautiful smile. In my spare time I enjoy traveling and being outdoors with my husband and two girls.

  • Marian Insurance Coordinator/ Office Manager

    I have been employed with Dr. Sjoberg in Pleasanton for 28 years!  I started as his lead assistant and have worked into a front office management position. I have three great sons who keep me busy and I enjoy hiking and biking in the beautiful tri-valley.