With Purpose.


Personalized care, progressive research, powerful alliances.

Our oncologists, pathologists, and genetic counselors are using the latest advances in gene therapy to provide personalized care. More precise than ever, genomics results in superior cancer diagnosis and treatment, enabling our physicians to prescribe more effective medications with fewer side effects because they are individually selected based on the patient’s genomic-driven response.

Mission Hospital is unique in that we have a molecular genomic testing laboratory within our health system, which allows us to perform advanced clinical sequencing promptly and affordably, without relying on an outside vendor.

By forming alliances with leading cancer institutions across the country, we are bringing the best in academic medicine and clinical trials to our South Orange County community.

Our dedicated clinical trials coordinator partners with patients to identify opportunities to become part of local research, as well as trials in other parts of the county, based on the specific tumor, cancer type, and genetics.

These invaluable partnerships provide our patients with innovative treatment options and the best possible outcomes.

“Leonard Cancer Institute takes pride in our precise, compassionate approach to treatment that uses an individual’s genetic fingerprint to guide decisions in prevention, diagnosis, and treatment of cancer.”

– Dr. George Miranda

Our vision

Delivering the most advanced precision medicine while providing dignity and hope to patients through personalized care.

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The Leonard Cancer Institute works quickly and decisively to treat cancer while treating patients with warmth, dignity, and respect


The Leonard Cancer Institute allows patients to make better, more pragmatic, decisions about their personalized health care


The Leonard Cancer Institute continues to offer transformational support for patients so they can live “health first” lives.

Our legacy of caring embodies our promise of health for a better world.