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Photo of Cynthia Lisette Sierra, MD

Cynthia Lisette Sierra, MD

My specialty: ? Family Medicine

My gender: ? Female

Languages I speak: ? English, Spanish

To choose or change a personal physician, call 1-888-956-1616.


About me

I would like to give you a warm welcome to my Web page. I hope this will help you get to know me, as I’m always interested in getting to know you.


I grew up in San Diego and went to UC San Diego for my undergraduate education. I knew since I was 8 years old that I wanted to be a doctor. I always envisioned myself caring for everyone, young and old, just like my own doctor did. For this reason, I decided to become a family practitioner. I love practicing medicine and I couldn't imagine doing anything else.

About my practice

My philosophy is member education. I think that you are the best advocate for your own health. As your doctor, I want to work with you as a team so we can achieve the best outcome. The nurses and staff I work with are also part of that team, and we all work together to help you be as healthy as you can be. I like to treat each member with the same kind of care I would like to receive. For this reason, I try to take my time with every member. Your health is the most important thing to me.

How I thrive

I’m the busy mom of twin boys. I live a very active life with work, family, and friends, all balanced out. I always try to leave some time every month for just me. That means going shopping, getting my hair done, or just going for a walk. My friends and I also make it a point to get together at least once a month, which is very therapeutic for me.

The information in this online directory is updated periodically.  The availability of physicians, hospitals, providers, and services may change.

Information about a practitioner is provided to us by the practitioner or is obtained as part of the credentialing process. If you have questions, please call us at 1-800-464-4000 (toll free) or visit the local Member Services department in your area. For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711 (toll free). You can also call the Medical Board of California at 916-263-2382, or visit their websiteKaiser Permanente is not responsible for the content or policies of external Internet sites. for information regarding a specific physician's medical license.