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DEREK NGUYEN MD INC
NPI 1700184280
Internal Medicine in Riverside, CA

Active since March 07, 2011
3767 ELIZABETH ST, RIVERSIDE, CA 92506(951) 683-6830(951) 228-9458 Get Directions Write a Review

NPPES record last updated: August 20, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 20, 2026, Sep 7, 2022 (2 updates tracked since 2022).

About Derek Nguyen Md Inc NPPES

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

DEREK NGUYEN MD INC (NPI 1700184280) is a healthcare organization registered as an internal medicine in Riverside, California and active in the NPI registry since March 2011. The organization lists Derek Hoa Thanh Nguyen, Owner, as its authorized official.

NPPES Registry Identity

NPI1700184280
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDEREK NGUYEN MD INC
Location Address3767 ELIZABETH STRiverside, CA 92506-2508
Mailing Address3767 Elizabeth StRiverside, CA 92506-2508 · (951) 683-6830 · Fax (951) 228-9458
Phone(951) 683-6830
Fax(951) 228-9458
Organization SubpartNo
Authorized OfficialDerek Hoa Thanh NguyenOwner · (951) 683-6830
Enumeration DateMarch 7, 2011
Last NPPES UpdateAugust 20, 20262 updates tracked since enumeration
NPPES CertifiedAugust 20, 2026
✔ NPI 1700184280 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A87744
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
3767 ELIZABETH ST, Riverside, CA 92506
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Derek Nguyen Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Derek Nguyen MD Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Derek Nguyen, MD
Internal Medicine
NPI 1528054095
3767 ELIZABETH ST
Riverside, CA 92506
(951) 683-6830
✔ PECOSSame address
Binhgiang Tran
Nurse Practitioner
NPI 1063821809
3767 ELIZABETH ST
Riverside, CA 92506
(951) 683-6830
✔ PECOS✔ Accepts MedicareSame address
Christina Ruiz
Nurse Practitioner
NPI 1134509177
255 TERRACINA BLVD SUITE 205A
Redlands, CA 92373
(909) 307-5736
✔ PECOS✔ Accepts Medicare12 mi
Jiraphat Sumner, FNP-DNP
Nurse Practitioner
NPI 1366229189
12223 HIGHLAND AVE STE 106-526
Rancho Cucamonga, CA 91739
(714) 676-3880
✔ PECOS✔ Accepts Medicare15 mi
Tien Vo, MD
Family Practice
NPI 1912460353
651 N STATE ST STE 5
San Jacinto, CA 92583
(951) 292-5741
✔ PECOS✔ Accepts Medicare27 mi

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

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Derek Nguyen MD Inc's NPI number?

The NPI number for Derek Nguyen MD Inc is 1700184280. It was assigned to this organization in the NPPES registry on March 7, 2011.

Where is Derek Nguyen MD Inc located?

Derek Nguyen MD Inc is located at 3767 Elizabeth St, Riverside, CA 92506. The listed phone number is (951) 683-6830.

What is Derek Nguyen MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Derek Nguyen MD Inc enrolled in Medicare?

Yes. Derek Nguyen MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Derek Nguyen MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 3 Medicare specialties reassign their Medicare billing to Derek Nguyen MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (3), Family Practice (1) and Internal Medicine (1). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Derek Nguyen MD Inc was last updated on August 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.