Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Diana Yun-Chi Wong, MD

Individual provider Gynecology Physician · NPI 1922019637

Diana Yun-Chi Wong, MD practises Obstetrics/Gynecology in Tarzana, California. Graduated from Wayne State University School of Medicine in 1990, 36 years ago. Practices with Providence Facey Medical Foundation, a 323-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
36
Trained at
Wayne State University School of Medicine
Licensed in
CA
In the registry since
2006
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

18411 Clark St Ste 102
Tarzana, CA 91356-3506 Not confirmed with CMS for 12 years — call before visiting
Phone: (877) 503-0518
Fax: (877) 503-0520
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gynecology Physician (primary) Taxonomy 207VG0400X · Licence G72281 (CA)

Record details

NPI number1922019637
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 10, 2006
Last updated in NPPESMarch 6, 2014

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Providence Facey Medical Foundation — 323 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients155
Services billed 260 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Consulting Fee $1,400 6 payments

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.

Colleagues at Providence Facey Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 323 clinicians in the practice; 12 are shown here.

Other providers in Tarzana