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Meet The Team

Our team of highly skilled and experienced care providers has our patients’ best interests and well-being at heart. Meet the people running our medical office.

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Chrystina Castellon, MD

Dr. Castellon completed her MD from New York Medical College, followed by a residency in Internal Medicine where she became chief resident in 2018. Her passion for patient care led her to specialize in Hematology-Oncology, completing her fellowship in 2021 at Boston University and Rhode Island Hospital. Before joining us in August 2023, Dr. Castellon made significant contributions at The Oncology Institute of Hope and Innovation in Downey. Her California roots and strong affinity for warm weather drew her back after 14 years on the East Coast. With family in Los Angeles, she's excited to settle in California.

Elizabeth Leynes-Le, MD

Elizabeth Leynes-Le, MD

CEO, President

Vu Phung, MD, MBA, MHA

Vu Phung, MD, MBA, MHA

Director of Operations

Linh Phung, RN

Linh Phung, RN

Oncology Nurse

Ana Rivera

Ana Rivera

Authorizations Clerk

Vanesa De Santiago

Vanesa De Santiago

Medical Assistant

Kathy Aryana

Kathy Aryana

Pres. of Business Dev.

Thomas Vu, RN

Thomas Vu, RN

Nursing Manager

Alya Czar

Alya Czar

Pharmacy Technician

Breanna Grass

Breanna Grass

Medical Records Clerk

Jordyn Reyes

Jordyn Reyes

Medical Assistant

Thuy-Vi Vu, MHA

Thuy-Vi Vu, MHA

Administrator

Erica Commaiani, RN

Erica Commaiani, RN

Oncology Nurse

John Ashraf Montoya

John Ashraf Montoya

Pharmacy Technician

Erica Caton

Erica Caton

Reception Clerk

Monserrat Guillen

Monserrat Guillen

Medical Assistant

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