About

Elaine Siu, MS, RDN, CSO, CNSC

Registered Dietitian Nutritionist. Board Certified Specialist in Oncology Nutrition. Certified Nutrition Support Clinician. 17+ years of clinical experience — 13+ years at City of Hope National Medical Center.

Elaine Siu, MS, RDN, CSO, CNSC — oncology dietitian
Master’s degree
MS in Nutrition
License
RDN · CDR
Specialty board
CSO · Oncology Nutrition
Nutrition support
CNSC · NBNSC
Background

Clinical experience

Elaine has practiced as a Registered Dietitian Nutritionist for more than seventeen years, with the majority of that career — 13+ years — at City of Hope National Medical Center, a top-ranked cancer hospital. Her work has been concentrated on adults with cancer, including those undergoing chemotherapy, radiation, major surgery, hormonal therapy, targeted therapy, immunotherapy, and stem cell transplantation.

She is one of a small number of US dietitians who hold both the Board Certified Specialist in Oncology Nutrition (CSO) and the Certified Nutrition Support Clinician (CNSC) credentials. That combination matters when cancer treatment changes how a patient eats — whether the answer is symptom-led oral nutrition, a feeding tube, parenteral nutrition, or a careful transition between them.

Now in private telehealth practice, Elaine sees patients across California, Arizona, Virginia, Colorado, New Jersey, and Iowa, and offers digital educational resources worldwide.

Philosophy

How care is provided

Evidence first

Recommendations follow current oncology nutrition evidence and consensus from professional bodies (Academy of Nutrition and Dietetics, ASPEN, ASCO, NCCN). Where evidence is mixed, it’s named as such and weighed against your situation rather than collapsed into a one-line rule.

Individualized, not template

There is no single “cancer diet.” Plans are built around your diagnosis, treatment, side effects, labs, weight history, comorbidities, culture, and food preferences. The plan you receive should look different from anyone else’s.

Coordinated with your team

With your written consent, communication with your oncologist, surgeon, infusion nurse, home health team, and other providers is part of the standard of care — especially in nutrition support, lab review, and symptom management.

Cultural fluency

Care is offered in English, Mandarin, and Cantonese. Plans account for Chinese and other Asian foodways rather than translating Western examples and stopping there.

Languages

Care in three languages

Sessions are offered in English, Mandarin (普通话), and Cantonese (廣東話). Educational materials are available in English and Traditional Chinese.

English

Full clinical and educational practice in English.

普通话 / Mandarin

1:1 sessions in Mandarin Chinese; written materials in Traditional Chinese.

廣東話 / Cantonese

1:1 sessions in Cantonese; written materials in Traditional Chinese.

繁體中文 site

The site is available in Traditional Chinese at /zh-Hant/.

In the public record

Press & endorsements

Quoted as an expert source in The New York Times, People, Healio, City of Hope, and Cancer Fighters. Endorsed by physicians and clinical nutrition leadership at City of Hope.

Ready to work together?

A complimentary 15-minute consult is the simplest way to see if this practice is the right fit.