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Meet the Doctors

  • Dr.
    Jeffery Layne

    Dr. Layne brings 30 years of experience to one of the most established practices in the Tri-Valley community. Dr. Layne is a master adjuster specifying in stretching, bony adjusting, and exercise. A graduate of Los Angelos School of Chiropractic, Dr. Layne not only delivers excellent care but brings wisdom and humor into the lives that he touches.

     Dr. Layne is a 20 year resident of the San Francisco Bay Area and enjoys getting into the outdoors as much as possible. He likes hiking, running, backpacking, and protein shakes and loves the environment and the people of the San Francisco area community.

  • Dr.
    Jim Yang

    'Everyone needs to live an optimal and higher quality of life.'

    After completing a Bachelor of Science in human biology and then graduating from New York Chiropractic College in 2004.

    Dr. Yang interned at the United States Naval Hospital, Camp LeJeune providing quality health care (attending privileges in various departments - orthopedics, neurology, podiatry, sports medicine, sick call, internal medicine, etc.) to all military personnel.

    Constantly striving to improve and update his medical knowledge through countless post-graduate study courses as well as research. He realizes the importance of exercise and nutrition, practicing these beliefs regularly, as a major part of his daily regimen.


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Office Hours

Our Regular Schedule


10:00 am-1:30 pm

3:00 pm-6:30 pm


Reports ONLY

2:00 pm-6:00 pm


10:00 am-1:30 pm

3:00 pm-6:30 pm




10:00 am-1:30 pm

3:00 pm-6:30 pm


9:00 am-1:00 pm




Reviews By Our Satisfied Patients

  • "I have been seeing Dr. Jon for 11 years. When I began seeing him, my spine curved in the opposite direction of how it should. It is now curving in the right direction. Dr. Jon is extremely knowledgeable about chiropractic. He is holistic in his approach to better health. I highly recommend Dr. Jon."
    Terri Bach, San Ramon, CA
  • "I came to Dr. Widenbaum because of back pain due to an auto accident. My back pain started going away, and I was able to sleep at night. I definitely recommend the Widenbaum Chiropractic team.
    They gave and provide the best healthcare."
    Mashied Shariati