Viet Sean Nguyen, MD
General Practice Physician · Riverside, CA
Viet Sean Nguyen, MD is a general practice physician with a practice address in Riverside, California, and NPI 1902556855, issued on Mar 24, 2022. Check the license (California A189934, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Viet Sean Nguyen
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- A189934 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4445 Magnolia Ave, Riverside, CA 92501
- Phone
- (951) 788-3000
- Enumerated
- Mar 24, 2022
- Record last updated
- Jul 28, 2025
- Medicare enrollment
- Enrolled (PECOS I20250530002300); accepts Medicare assignment
- Medical or professional school
- Univ Of Central Florida, College Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Also registered at 4445 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joey Abadilla, MDStudent in an Organized Health Care Education/Training Program1093417818
- Rashed AbdelaalDiagnostic Radiology Physician1518726090
- Ahmed Abdelhalim, MDDiagnostic Radiology Physician1275162927
- Nirusha AbeydeeraStudent in an Organized Health Care Education/Training Program1295354454
- Alyssa Aboff, CRNA, DNPCertified Registered Nurse Anesthetist1760133292
- Brandon Abrajan, DOStudent in an Organized Health Care Education/Training Program1861141186
Verify Viet Sean Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A189934Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average general practice physician in 2024
74 Medicare Part D claims for 63 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin13 claims
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
- Cep America - CaliforniaPomona, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Viet Sean Nguyen among 1,956 general practice physician records in California
Viet Sean Nguyen, MD is one of 1,956 general practice physician records with a practice address in California. 48% 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 88% of them.
- NPI issued2022 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated2022 · median 1994 among the 520 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in Riverside → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Joshua Batt, D.O.Riverside, CA 925011922368505
- Charles Boadu, MDRiverside, CA 925011861056699
- Lydia David, M.D.Riverside, CA 925011720119605
- Prabha Dhalla, M.D.Riverside, CA 925011144549049
- Hunter Goldsmith, MDRiverside, CA 925011205538808
- Surjeet KundiRiverside, CA 925011245868934
- Erik Le, MDRiverside, CA 925011619679388
- Cherry Liu, MDRiverside, CA 925011730768078
Common questions
What is Viet Sean Nguyen, MD's NPI number?
Viet Sean Nguyen, MD's National Provider Identifier (NPI) is 1902556855, issued on Mar 24, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Viet Sean Nguyen, MD located?
The NPPES record lists a practice address at 4445 Magnolia Ave, Riverside, CA, 92501. Phone: (951) 788-3000. Providers update this record themselves, so call before visiting.
How can I verify Viet Sean Nguyen, MD's license?
NPPES lists California license number A189934, 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 Viet Sean Nguyen, MD prescribe under Medicare Part D?
In 2024, Viet Sean Nguyen, MD had 74 Medicare Part D claims for 63 beneficiaries; the average among general practice physician prescribers was 3,030. 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.