Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Lydia Dz-Yun Chow, MD

Individual provider Hematology & Oncology Physician · NPI 1770087314

Dr. Lydia Dz-Yun Chow, MD practises Hematology/Oncology in West Covina, California. Graduated from Tulane University School of Medicine in 2018, 8 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
8
Trained at
Tulane University School of Medicine
Licensed in
CA
In the registry since
2018
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1250 S Sunset Ave
West Covina, CA 91790-3961
Phone: (626) 856-5858
Fax: (626) 856-5853
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence A165133 (CA)

Record details

NPI number1770087314
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 20, 2018
Last updated in NPPESJune 19, 2024
Certification dateJune 19, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients108
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Long term medical supply or device loan $1,196 12 payments · a device or supply lent for a long period, not cash

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Usc Arcadia Hospital Hospital · Arcadia, CA
  • Emanate Health Inter-Community Hospital Hospital · Covina, CA
  • Huntington Hospital Hospital · Pasadena, CA

Also affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at City of Hope Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 959 clinicians in the practice; 12 are shown here.

Other providers in West Covina