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DIANA NGUYEN STEWART NP
NPI 1356885289
Nurse Practitioner - Psychiatric/Mental Health in Apo, AE

Active since December 12, 2016PECOS Enrolled
UNIT 33100 BOX LANDSTUHL, APO, AE 09180(314) 590-7344 Get Directions Write a Review

NPPES record last updated: July 29, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 12, 2019, Dec 12, 2016 (2 updates tracked since 2016).

About Diana Nguyen Stewart Np NPPES

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

DIANA NGUYEN STEWART NP (NPI 1356885289) is an individual psychiatric/mental health provider in Apo, AE, licensed in California (NP95012009) and active in the NPI registry since December 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1356885289
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameDIANA NGUYEN STEWARTCredential: NP
Location AddressUNIT 33100 BOX LANDSTUHLApo, AE 09180-3100
Mailing AddressPsc 402 Box 2702Apo, AE 09180-0028
Phone(314) 590-7344
Sole ProprietorYes
Enumeration DateDecember 12, 2016
Last NPPES UpdateJuly 29, 20252 updates tracked since enumeration
NPPES CertifiedJuly 29, 2025
✔ NPI 1356885289 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CA · NP95012009
Also ListedRegistered Nurse · Psychiatric/Mental Health, AdultTaxonomy 163WP0809X · License 95105558 (CA)
Also ListedLicensed Vocational NurseTaxonomy 164X00000X · License 95105558 (CA)

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana Nguyen Stewart Np 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.

Other Providers at the Same Location NPPES 20

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

DR. SARAH JANET RABIE M.D.
Obstetrics & Gynecology
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-4697
DR. RAYMOND LI-MING PHUA PT
Physical Therapist (Orthopedic)
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-4913
TRACY COX LICSW
Social Worker (Clinical)
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-6310
DR. MICHAEL JORGE PHD
Psychologist (Counseling)
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-7920
SAMANTHA OBRIEN
Nurse Practitioner (Family)
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-4913
ERIC ALLEN LEE II MD
Psychiatry & Neurology (Psychiatry)
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 636-9585
DR. CARMEN GADDINI VAVRA DO
Pediatrics
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-5762
KATHLEEN NICOL LICSW
Counselor (Mental Health)
UNIT 33100 BOX LANDSTUHL
APO, AE 09180
(314) 590-4058

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 Diana Stewart's NPI number?

The NPI number for Diana Stewart is 1356885289. It was assigned to this individual provider in the NPPES registry on December 12, 2016.

Where is Diana Stewart located?

Diana Stewart practices at Unit 33100 Box Landstuhl, Apo, AE 09180. The listed phone number is (314) 590-7344.

What is Diana Stewart's specialty?

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

Is Diana Stewart enrolled in Medicare?

Yes. Diana Stewart is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Diana Stewart was last updated on July 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.