(650) 342-7432

100 S. Ellsworth Ave.
Suite 507
San Mateo, CA 94401
(650) 342-7432

Thank you for selecting the gastrointestinal office of Dr. Onuma & Dr. Lee, an gastrointestinal specialty practice dedicated to exceptional care using state-of-the-art technology. Dr. Onuma & Dr. Lee feels that an open communication regarding mutual patients is crucial in delivering excellence in comprehensive patient care. If you have any questions or concerns, please do not hesitate to contact them at the office: (650) 342-7432.

Referral Form

You may refer patients to our office by filling out our online PDF Referral Form or fill out online form bellow.

Or you may simply print out Referral Form for Patient, and hand it to your patient upon check-out.


Questions or Comments?
We encourage you to contact us whenever you have an interest about our services.

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100 S. Ellsworth Ave
Suite 507
San Mateo CA, 94401