All of our physicians are Board Certified in either Family Practice or Internal Medicine.

Ernest Jones, M.D.

Dr. Jones earned his Bachelor of Science in Chemistry at Brigham Young University and obtained his medical degree at University of Utah, Salt Lake City.  He completed his internship and residency at Silas B. Hayes Army Hospital, Fort Ord, California.  

Dr. Jones is an avid bicyclist.  He has participated in the Highway 1 100 mile ride the last few years.  His hobbies include gardening and photography.  He is married and has seven children 
and enjoys spending time with his family and grandchildren,  and traveling as time permits.

Cary Fitchmun, M.D.

Since he was a child, Dr. Fitchmun wanted to be a doctor. Now that he has been in practice for fourteen years, he still looks forward to every new work day.  He believes that to diagnose and treat patients effectively, a doctor must not only have excellent examination skills but take the time to listen compassionately and attentively.  The best outcomes happen when patients actively participate in maintaining good health, preventing illness, and controlling diseases.  To do that, he provides his patients with solid medical information and treatment plans that are aligned with their needs and goals so they can make the best possible health care choices. 

Dr. Fitchmun graduated from U.C. Berkeley with honors and then attended U.C. Davis School of Medicine with a Regents scholarship.  After completing residency in 2002, he joined Arroyo Medical Group where he currently serves as its medical director.  He maintains Board certification in Family Medicine and is an active member of The American Academy of Family Physicians and the California Academy of Family Physicians. 

His areas of expertise include Dermatology and Skin Cancer treatment, General Adult Medicine, and Preventive Medicine. 

He is happily married and has two children. He enjoys surfing, swimming, hiking, and traveling in his spare time. 

David Ruiz, M.D.

Dr. Ruiz earned his Bachelor of Science in Biology at the University of Redlands in California and obtained his medical degree from the University of California, Los Angeles.  He completed a three year Family Medicine Residency training at White Memorial Medical Center in Los Angeles as well.

He and his wife have lived on the Central Coast  for 15 years. They have three sons. His interests include singing and playing the guitar.  He also enjoys hiking, biking, fishing, and snow skiing.

As a board certified family physician, Dr. Ruiz provides high quality medical care with an emphasis on prevention.  He encourages patients to develop healthy lifestyles that nurture their mind, body, and spirit.

Dewey Sandberg, M.D.

Dewey Sandberg, M.D., graduated from Stanford University with a Bachelor of Science degree in Biology.  He attended medical school at University of California, Irvine.  He acquired specialty training in Family Practice at University of California, Davis Medical Center in Sacramento, where he was Chief Resident during his final year in that program.

In the years since then, he has obtained and continued to maintain American Board of Family Medicine certification in the specialty.  He moved to the Central Coast in 1992, and joined Arroyo Medical Group in 2004.

He is married and has two teenage sons.  He enjoys gardening and outdoor sports.  He sings in his church choir and in a small a capella group. 


Our Practice Administrator is Marty Robles, B.S., CMPE. Marty graduated from the University of San Francisco with a major in Human Resource Management with emphasis on Statistics. She is also a Certified Medical Practice Executive with the Medical Group Management Association. She joined Arroyo Medical Group in 2001 and has been managing medical clinics both as an Operations Manager and as a Practice Administrator since 1992. She has three grown children and four grandchildren. 

Our Business Services Manager is Barbara Zavala. Barbara has over twenty years of medical billing experience, claims processing for insurance companies, and many years of supervision and management experience. She joined Arroyo Medical Group in 2010. She has one son and one grandchild. 

Our Medical Records Manager is Kary Burch. Kary has been with Arroyo Medical Group since 1993. She has held many different positions in the office including Reception, Medical Assisting, Billing, Accounts Payable, Credentialing, and Medical Records. Kary is also the Nursing Supervisor. She enjoys her grandchildren and gardening.