DIANA NGUYEN NP
NPI 1841966777
Nurse Practitioner - Psychiatric/Mental Health in Costa Mesa, CA

Q: What is Diana Nguyen's NPI number?

The NPI number for Diana Nguyen is 1841966777. It was assigned to this individual provider in the NPPES registry on August 20, 2021.

Q: What is Diana Nguyen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Q: When was this NPI record last updated?

The NPPES record for Diana Nguyen was last updated on October 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 20, 2021

78.65/100

CMS Quality Rating

1150 BAKER ST, COSTA MESA, CA 92626(714) 662-7517 Get Directions Write a Review

NPPES record last updated: October 20, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 14, 2023, Oct 6, 2021, Aug 20, 2021 (3 updates tracked since 2021).

On this page

About Diana Nguyen Np NPPES

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

DIANA NGUYEN NP (NPI 1841966777) is an individual psychiatric/mental health provider in Costa Mesa, California, licensed in California (95018050) and active in the NPI registry since August 2021.

NPPES Registry Identity

NPI1841966777

Entity TypeIndividualFemale

Primary Taxonomy363LP0808X

Provider Legal NameDIANA NGUYENCredential: NP

Location Address1150 BAKER STCosta Mesa, CA 92626-4111

Mailing Address1150 Baker StCosta Mesa, CA 92626-4111 · (866) 389-2727

Phone(714) 662-7517

Sole ProprietorYes

Enumeration DateAugust 20, 2021

Last NPPES UpdateOctober 20, 20253 updates tracked since enumeration

NPPES CertifiedOctober 20, 2025

✔ NPI 1841966777 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

License✔ Licensed in CA · 95018050

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License NP95018050 (CA)

1150 BAKER ST, Costa Mesa, CA 92626

Open in Google Maps ↗

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

78.65/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

66.95

Improvement Activities

Cost

89.44

Other Providers at the Same Location NPPES 13

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

NGAN LY

Pharmacist