THOMAS NGUYEN DDS
NPI 1821726126
Dentist in Riverside, CA

Q: What is Thomas Nguyen's NPI number?

The NPI number for Thomas Nguyen is 1821726126. It was assigned to this individual provider in the NPPES registry on August 13, 2022.

Q: What is Thomas Nguyen's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Nguyen was last updated on April 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 13, 2022PECOS Enrolled

4371 LATHAM ST, RIVERSIDE, CA 92501(833) 867-4642(360) 462-2757 Get Directions Write a Review

NPPES record last updated: April 30, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 12, 2023, Aug 15, 2022, Aug 13, 2022 (3 updates tracked since 2022).

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About Thomas Nguyen Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS NGUYEN DDS (NPI 1821726126) is an individual dentist in Riverside, California, licensed in California (107781) and active in the NPI registry since August 2022. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1821726126

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameTHOMAS NGUYENCredential: DDS

Location Address4371 LATHAM STRiverside, CA 92501-1706

Mailing Address2084 Wild WoodsUpland, CA 91786-8469 · (714) 725-5281

Phone(833) 867-4642

Fax(360) 462-2757

Sole ProprietorYes

Enumeration DateAugust 13, 2022

Last NPPES UpdateApril 30, 20253 updates tracked since enumeration

NPPES CertifiedApril 30, 2025

✔ NPI 1821726126 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in CA · 107781

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

4371 LATHAM ST, Riverside, CA 92501

Open in Google Maps ↗

Secondary Practice Locations 2

Location 16000 N Figueroa StLos Angeles, CA 90042-4232 · Phone (866) 616-9344

Location 21450 E Holt AvePomona, CA 91767-5822 · Phone (909) 469-9016

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas Nguyen Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Thomas Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Arroyo Vista Family Health Foundation

46 mi

Federally Qualified Health Center (FQHC)

4815 VALLEY BLVD, SUITE C
Los Angeles, CA 90032

Reassigned Medicare billing, California enrollment
61 clinicians in this Medicare group

NPI 1316088479 (323) 222-1134

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$91.88 typical visit price

range $59.60 – $179.42

Typical copayment $22.97 (range $14.90 – $44.85)

Most-billed visit code 99203

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. RASHID ALTAFI M.D.

Internal Medicine (Geriatric Medicine)