About Lonna Larsh, MD

My practice

I passionately believe health is one our most valuable assets. I believe that our very best health is not something that just comes to us; it is something that we have to work for. At the same time, working for our best health can be, and should be fun. I believe that health is the sum total of a web of interconnected factors that include what we eat and how we digest our food, how we move, how we sleep, how we relax, and how we relate to each other. Health is the place where our genetics and our environment come together. We each have the opportunity and the responsibility to make the best of this interaction. I am honored to be in a position to help you make the most of your genes and your environment to reach your maximum potential.

My Specialties

As a physician, I specialize in you. I take care of the whole family from newborn babies to those over 100 years of age. My primary interest is functional medicine which focuses on underlying causes of and prevention of disease. We are all biochemically individual. Functional medicine focuses on improving each person’s biochemistry to help them obtain the best quality of life that is possible. My focus is on lifestyle medicine, encouraging people to take an active part in their health through dietary changes and exercise, as well as stress reduction.

My Philosophy

Health care should be a partnership between a doctor (or other health care provider) and an individual. I strongly encourage collaboration between members of a health care team. I believe that we all have the ability to reach our potential and that the best information can help us to get there. It’s my role to provide that information, and hopefully inspiration as well.

My Credentials

Certifications & Trainings:

Board Certified in Family Medicine July, 1994
Re-certified July 2000 and July 2007
Board Certified with the American Board of Integrative and Holistic Medicine 2006-2013
Integrative and Functional Medicine Training:
American Board of Integrative and Holistic Medicine Fall, 2007
Institute of Functional Medicine 2008/2009 and ongoing training (certification program in process)
Acupuncture training: Helms Medical Institute Medical Acupuncture for Physicians 2004.
Food as Medicine (Center for Mind Body Medicine) 2005.


July 1991 – July 1994

Contra Costa Health Services
2500 Alhambra Ave
Martinez, CA 94553

Medical Education:

September 1987 – June 1991

University of California, Irvine
College of Medicine
Irvine, CA 92697-4089

Undergraduate Education:

University of California, Santa Cruz (BA Biology March 1986) Honors, Phi Beta Kappa
Cabrillo College, Aptos, CA (AA Liberal Arts 1984)
Cal Poly State University, San Luis Obispo, CA (September 1979 to December 1981)

New Patients:

Our practice is only accepting new patients who sign up for a program of comprehensive wellness care with us. Call us for details at (831) 421-0775.

Insurance Networks: none

Patient Testimonials

Office Location:

709 Frederick Street
Santa Cruz, CA 95062


Monday to Thursday: 9:00 am to 5:00 pm

Friday: By appointment only