Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. CHI Tonglien Viet, MD, DDS, PHD

Individual provider Surgical Oncology Physician · NPI 1306157094

Dr. CHI Tonglien Viet, MD, DDS, PHD practises Maxillofacial Surgery in Loma Linda, California. Graduated from University of California, San Francisco School of Medicine in 2010, 16 years ago. Practices with Loma Linda University, a 7-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
16
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2010
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

11092 Anderson St
Loma Linda, CA 92350-6402
Phone: (909) 558-4423
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 550 1st Ave, New York, NY 10016-6402 — (212) 262-5506

Specialties & licences

Oral & Maxillofacial Surgery (D.M.D.) (primary) Taxonomy 204E00000X · Licence A153114 (CA)
Surgical Oncology Physician Taxonomy 2086X0206X · Licence A153114 (CA)

Record details

NPI number1306157094
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , DDS , PHD
Sole proprietorNo
NPI enumeratedJune 28, 2010
Last updated in NPPESFebruary 12, 2026
Certification dateFebruary 12, 2026

Medicare enrollment

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

Medicare specialtyMAXILLOFACIAL SURGERY
Also practisesORAL SURGERY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Loma Linda University — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Melanoma (skin cancer) excision 1–10 times
Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients63
Services billed 245 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Honoraria $7,000 3 payments
Travel and Lodging $846 3 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $102 4 payments · a meal or drink at a meeting or visit, not a fee

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.

Colleagues at Loma Linda University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Loma Linda