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Meet the Doctors

  • Dr.
    Heidi J. Keller

    Doctor of Chiropractic - Life University

    Faculty Life Chiropractic College West 1998-2001

    Masters of Science in Neuroendocrinology - University of Denver

    Bachelors of Science/ Minor in Physics and French - University of Denver

    Dr. Heidi Keller has an extensive background in science, holistic health and pediatric care.   She is a caring and knowledgable healer who merges the worlds of science, philosophy and alternative healthcare.  She is a passionate public speaker, advocate for natural healthcare for families and a community resource.  

    Dr. Keller did her undergraduate studies at the University of Denver where she majored in Biology.  Her college career included a swimming scholarship and she was selected to be a undergraduate laboratory instructor.  This fueled her interest in teaching and began her lifelong involvement in education.  Her Master's degree was in Neuroendocrinology and was offered to her on scholarship for her academic excellence.  Her graduate studies work was published in two peer reviewed journals including Peptides and the Journal of Comparative Endocrinology.

    While in graduate school Dr. Keller had a serious skiing injury which landed her in a chiropractic office.  The care she received their resulted in a complete healing of her accident injuries and also educated her about the power of chiropractic care.  While receiving chiropractic adjustments in grad school she experienced huge shifts in her health including the resolution of long term serious allergies.  This experience shifted her allopathic perspective on health to one of holism and natural healthcare.

    Dr. Keller changed her trajectory from medicine to Chiropractic because she identified the truth that working with the healing system of the body was more powerful than suppressing it.  She attended Life University in Atlanta for her Chiropractic degree.  Here she was tapped to be a paid intern in research department of the university.  This provided her the opportunity to work with severely ill and disabled individuals as well as traditional patients from the clinic. This venue also brought many children in to her life as she became one of the interns who resonated with and cared for disabled little ones.

    In addition, she ran the Pediatrics club and studied with the grandfather of Chiropractic Pediatrics, Dr. Larry Webster.  Thus, she is proficient in the Webster Breech Turning Technique for pregnant women and offers care for women during their pregnancies.

    After graduating from Chiropractic School Dr. Keller opened a practice in Oakland, California. Her practice included people of all ages and with varied health issues.  During this time she was also an instructor at Life Chiropractic College West in Hayward, California.  Here she taught pediatric adjusting, skeletal anatomy, embryology, toxicology and chiropractic philosophy.  She enjoyed a national speaking career and traveled to educate others about the power of the body's innate healing systems.

    Dr. Keller then transitioned to living in Marin County and opened Lifeforce Family Chiropractic with Dr. Jim Lenihan.  She started a family and has one son, Hawke who is 11 years old.  Dr. Keller was also a foster parent and has a wonderful young girl named Shaylin in her life from this experience.  

    Dr. Heidi Keller has cared for thousands of people from newborns to seniors. She has a specialty in caring for children and newborns.  Her practice includes care for pregnant women and cranial chiropractic work done for babies minutes after their birth. As an athlete herself she also understands and cares for clients with sports injuries.  Her expertise has been sought out by many people suffering from chronic illness and infection.  

    Dr. Heidi has been practicing in San Anselmo for 12 years and enjoys the Marin lifestyle.  Her list of loves include: reading, teaching, studying spirituality, yoga, hiking and camping all over California, visiting lakes and hot springs, preparing delicious and sharing delicious food and being with family and friends.

  • Dr.
    Jim Lenihan

    Doctor of Chiropractic - Life University

    Faculty Life Chiropractic College West 1999-2001

    Bachelors of History - California Polytechnic State University

    Dr. Jim's mission is to bring love, healing, and connection to individuals and the world by giving adjustments and teaching chiropractic principles.  Living according to this mission is what drives him to be so passionate about chiropractic and life.  It is important that you feel comfortable and can trust the qualifications and expertise of your chiropractor so that you can be fully present in your  healing process.  Below are some of the factors that have helped Dr. Lenihan become a great chiropractor and leader in his profession.

    Dr. Lenihan has a B.A. in History from Cal Poly, San Luis Obispo.  He graduate Cum Laude from Life Chiropractic College West, San Lorenzo, in 1999.  While in school Dr. Jim was President of both the Pediatric Adjusting Club and the F.S.C.O.  Dr. Lenihan had one of the largest clinical outpatient practices in the history of the school which was largely based upon referrals and taking care of the faculty.  Dr. Lenihan has received post graduate education and extensive training in Diversified, Gonstead, Network, Biogeometric Integration, Thompson Drop Table, and Activator techniques.  

    In February 1999, Lifeforce Family Chiropractic in San Anselmo opened its doors.  Over these past years it has grown to serve thousands of people in Marin.  Dr. Lenihan has performed over 100,000  adjustments and helped thousands of people reach their fullest health potential.  Lifeforce Family Chiropractic is an incredible environment.  It has grown to be one of the largest practices in Marin because of the great results that we get and the amount of referrals that our patients send to the office.  Dr. Lenihan gives gentle, specific adjustments using  his own blend of techniques, his adjustments are suitable for everyone from newborn babies to osteoporotic seniors.

    Dr. Lenihan has lectured at adjusting seminars and is sought out by chiropractors and chiropractic students for his expertise.  Dr. Jim is also a guest lecturer at Life Chiropractic College West and Sherman College of Straight Chiropractic in South Carolina.  He has been part of the teaching staff at The Masterpiece Training Camp in Durango, Colorado.  He has been a keynote speaker at The Seattle Philosophy Forum.

    Dr. Lenihan is the father of Hawke Lenihan who was  born in February 2001 and adjusted minutes after his birth.  Hawke has rarely been sick.  

    Dr. Lenihan is an avid big wave surfer and loves studying history.  


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3:00 pm - 6:30 pm


9:00 am - 12:00 pm

3:00 pm - 6:30 pm


9:00 am - 12:00 pm

3:00 pm - 6:30 pm


9:00 am - 12:00 pm

3:00 pm - 6:30 pm


9:00 am - 12:00 pm




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