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QUAN H. NGUYEN M D A PROFESSIONAL CORPORATION
NPI 1841567351
Specialist in Fountain Valley, CA

Active since November 29, 2011
10175 SLATER AVE STE 100, FOUNTAIN VALLEY, CA 92708(714) 979-9911(714) 979-9912 Get Directions Write a Review

NPPES record last updated: June 20, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Quan H. Nguyen M D A Professional Corporation NPPES

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

QUAN H. NGUYEN M D A PROFESSIONAL CORPORATION (NPI 1841567351), doing business as Q-dermatology, is a healthcare organization registered as a specialist in Fountain Valley, California and active in the NPI registry since November 2011. The organization lists Pauline Tang, Mgr, as its authorized official.

NPPES Registry Identity

NPI1841567351
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameQUAN H. NGUYEN M D A PROFESSIONAL CORPORATION
Location Address10175 SLATER AVE STE 100Fountain Valley, CA 92708-4702
Mailing Address10175 Slater Ave Ste 100Fountain Valley, CA 92708-4702 · (714) 979-9911 · Fax (714) 979-9912
Phone(714) 979-9911
Fax(714) 979-9912
Organization SubpartNo
Authorized OfficialPauline TangMgr · (714) 979-9111
Enumeration DateNovember 29, 2011
Last NPPES UpdateJune 20, 2025
NPPES CertifiedJune 20, 2025
✔ NPI 1841567351 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · G071956
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
10175 SLATER AVE STE 100, Fountain Valley, CA 92708
Open in Google Maps ↗

Other Names 1

Doing Business AsQ-dermatology

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)

Quan H. Nguyen M D A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Quan H. Nguyen M D A Professional Corporation, which bills Medicare for the services this clinician delivers.

Clinician (1)

Quan Nguyen, M.D.
Dermatology
NPI 1760402770
10175 SLATER AVE STE 100
Fountain Valley, CA 92708
(714) 979-9911
✔ PECOS✔ Accepts MedicareSame address

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 Quan H. Nguyen M D A Professional Corporation's NPI number?

The NPI number for Quan H. Nguyen M D A Professional Corporation is 1841567351. It was assigned to this organization in the NPPES registry on November 29, 2011. The provider is doing business as Q-Dermatology.

Where is Quan H. Nguyen M D A Professional Corporation located?

Quan H. Nguyen M D A Professional Corporation is located at 10175 Slater Ave Ste 100, Fountain Valley, CA 92708. The listed phone number is (714) 979-9911.

What is Quan H. Nguyen M D A Professional Corporation's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Quan H. Nguyen M D A Professional Corporation enrolled in Medicare?

Yes. Quan H. Nguyen M D A Professional Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Quan H. Nguyen M D A Professional Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Dermatology) reassigns their Medicare billing to Quan H. Nguyen M D A Professional Corporation. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Quan H. Nguyen M D A Professional Corporation was last updated on June 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.