Ellen O'Malley Kato, FNP
Concierge Family Medicine nurse practitioner, San Francisco, CA
One MedicalEllen O'Malley Kato is a family nurse practitioner at One Medical who sees patients aged 14 and older.
Facts on this page last checked September 2026. How we check doctors
About Ellen O'Malley Kato
Kato trained at UCSF. Kato has experience in adult and adolescent primary care, urgent care, and reproductive and women's health. Kato is especially interested in treating hypertension, diabetes, asthma, high cholesterol and sexually transmitted infections, and in providing prenatal care.
One Medical is a membership-based primary care practice that also works with patients' insurance.
Membership and fees
One Medical offers a membership for $199 a year, and the subscription continues until canceled.
Copays and deductibles may apply if care is billed to insurance.
Licenses and credentials
Location
Patient reviews
Questions patients ask
Does Kato take insurance, or offer a membership?
One Medical is a membership-based primary care practice that also works with patients' insurance.
How much does a membership at One Medical cost?
A One Medical membership costs $199 a year and continues until canceled. Copays and deductibles may apply if care is billed to insurance.
Is Kato a doctor?
Kato is a nurse practitioner, not a physician.
What ages does Kato see?
Kato sees patients aged 14 and older.
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