NPPES file of Aug 9, 2026

Brian Xieu

Family Medicine Physician · Belmont, CA

Brian Xieu is a family medicine physician with a practice address in Belmont, California, and NPI 1295475457, issued on Mar 29, 2022. Check the license (California 21946, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295475457
Name
Brian Xieu
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
21946 CA
Self-reported in NPPES; status is on the state search
Practice location
1301 Shoreway RD Ste 100, Belmont, CA 94002
Phone
(650) 596-7000
Enumerated
Mar 29, 2022
Record last updated
Feb 20, 2026
Fax
(650) 596-7093
Medicare enrollment
Enrolled (PECOS I20241223002392); accepts Medicare assignment
Medical or professional school
Touro Un Col Of Osteopathic Medicine, Henderson, 2022
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1301 Shoreway RD Ste 100

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dennis Hughes, M.D.Internal Medicine Physician1215076468
  2. Meghan Humbert, DONeurology Physician1083005581
  3. Marco Jacobo, PA-CPhysician Assistant1215325337
  4. Pragya Jain, M.D.Internal Medicine Physician1053624189
  5. Uyen Le, M.D.Family Medicine Physician1598016636
  6. Nina Lippey, DOFamily Medicine Physician1508420555

Verify Brian Xieu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 21946
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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99% fewer Medicare Part D claims than the average family medicine physician in 2024

18 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Brian Xieu18
  2. Specialty average3,544

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Dignity Health Medical FoundationBelmont, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Brian Xieu among 17,133 family medicine physician records in California

Brian Xieu is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.

  • NPI issued2022 · 94% of these records are older, 3% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2022 · median 2005 among the 10,652 with a school on file
  • Record last updated2026 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 family medicine physician records list a practice address in Belmont

They are 8 of the 324 NPPES records with a practice address in Belmont, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Gary Greensweig, D.O.Belmont, CA 940021518970409
  2. Adil Jadallah, M.D.Belmont, CA 940021780772376
  3. Uyen Le, M.D.Belmont, CA 940021598016636
  4. Nina Lippey, DOBelmont, CA 940021508420555
  5. Jolly PhilipBelmont, CA 940021487653556
  6. Christopher SmithBelmont, CA 940021881199909
  7. Matthew Yu, DOBelmont, CA 940021811575301
  8. Mark Beltran, MDBurlingame, CA 940101801834601

Common questions

What is Brian Xieu's NPI number?

Brian Xieu's National Provider Identifier (NPI) is 1295475457, issued on Mar 29, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Brian Xieu located?

The NPPES record lists a practice address at 1301 Shoreway RD Ste 100, Belmont, CA, 94002. Phone: (650) 596-7000. Providers update this record themselves, so call before visiting.

How can I verify Brian Xieu's license?

NPPES lists California license number 21946, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Brian Xieu prescribe under Medicare Part D?

In 2024, Brian Xieu had 18 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.