Individual provider

Danh Nguyen, MD

Diagnostic Radiology Physician Medicare enrolled

Danh Nguyen, MD is a Diagnostic Radiology Physician in Riverside, CA, registered under NPI 1003999103.

Getting there

The practice address on file is 4334 CENTRAL AVE, Riverside, CA 92506. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

4334 CENTRAL AVE, Riverside, CA 92506 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
61259 AZ Diagnostic Radiology Physician
A60382 CA Diagnostic Radiology Physician primary

Licences are recorded in 2 states: AZ, CA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Diagnostic Radiology
PAC ID
9537055892

Enrolled in Medicare 2 times, across 2 states:

StateEnrollment IDProvider type
California I20050730000171 Practitioner - Diagnostic Radiology
Arizona I20210701002675 Practitioner - Diagnostic Radiology

Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. There are 2 separate enrolment records across 2 states (CA, AZ). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.

Licensed in 2 states

This provider holds licences in 2 states: Arizona and California. The practice address on file is in Riverside, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.

AZ Arizona
Licence
61259
Specialty
Diagnostic Radiology Physician
Verify with the AZ board →
CA California practice address
Licence
A60382
Specialty
Diagnostic Radiology Physician
Verify with the CA board →

Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.

What Diagnostic Radiology covers

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease. NUCC Health Care Provider Taxonomy, code 2085R0202X
Allopathic & Osteopathic Physicians Radiology Diagnostic Radiology

All registered taxonomy codes

This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
2085R0202X Diagnostic Radiology Physician Diagnostic Radiology 61259 AZ
2085R0202X Diagnostic Radiology Physician Diagnostic Radiology A60382 CA primary

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1003999103 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateOct 23, 2006
Last updatedMar 7, 2023
StatusActive
Sole proprietorNo
GenderMale
CredentialMD
Practice address 4334 CENTRAL AVE
Riverside, CA 92506
(951) 682-7580
Fax (951) 682-1580
Mailing address 1510 COTNER AVE
Los Angeles, CA 90025
Other names John Nguyen Other Name
Other identifiers 00A603820 · Medicaid (CA)
RHL141511 · Other (CA)
The last update on file is Mar 7, 2023. Providers are only required to update NPPES when their information changes, so an older date does not necessarily mean the details are wrong — but it is worth a quick call before you travel.

Number check

1003999103 passes the NPI check digit test The final digit 3 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 0 0 3 9 9 9 1 0
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 0 0 3 9 9 9 1 0

Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1003999103?
NPI 1003999103 is the National Provider Identifier assigned to Danh Nguyen, MD in Riverside, CA. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Diagnostic Radiology cover?
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
How do I contact Danh Nguyen, MD?
The phone number on file with NPPES is (951) 682-7580, last updated Mar 7, 2023. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Danh Nguyen, MD accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1003999103 a valid number?
Yes. 1003999103 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.