Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Brianna Williams, MD

Individual provider Surgery Physician · NPI 1548729643

Brianna Williams, MD practises General Surgery in Riverside, California. Graduated from Un of California, Irvine, College of Medicine in 2019, 7 years ago. Practices with United Medical Doctors, a 169-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Trained at
Un of California, Irvine, College of Medicine
Licensed in
CA
In the registry since
2019
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

4244 Riverwalk Pkwy Ste 290
Riverside, CA 92505-3373
Phone: (951) 520-9392
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence A179971 (CA)

Record details

NPI number1548729643
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 18, 2019
Last updated in NPPESMarch 4, 2026
Certification dateMarch 4, 2026

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolUN OF CALIFORNIA, IRVINE, COLLEGE OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice United Medical Doctors — 169 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Food and Beverage $215 3 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.

Colleagues at United Medical Doctors

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 169 clinicians in the practice; 12 are shown here.

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