Diana Nguyen Stewart, NP

Individual provider Adult Psychiatric/Mental Health Registered Nurse · NPI 1356885289

Diana Nguyen Stewart, NP is an Adult Psychiatric/Mental Health Registered Nurse in APO, Armed Forces Europe. Practices as a sole proprietor. Licensed in California.

Licensed in: CA
In the registry since: 2016
Specialties on file: 3

What do these letters mean?

NP — Nurse Practitioner: An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

Unit 33100 Box Landstuhl
APO, AE 09180-3100
Phone: (314) 590-7344

No coordinates on file. Search this address in Google Maps

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary)	Taxonomy 363LP0808X · Licence NP95012009 (CA)
Adult Psychiatric/Mental Health Registered Nurse	Taxonomy 163WP0809X · Licence 95105558 (CA)
Licensed Vocational Nurse	Taxonomy 164X00000X · Licence 95105558 (CA)

Record details

NPI number	1356885289
Entity type	Individual (Type 1)
Gender	Female
Credentials	NP
Sole proprietor	Yes
NPI enumerated	December 12, 2016
Last updated in NPPES	July 29, 2025
Certification date	July 29, 2025

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage	$58 3 payments · a meal or drink at a meeting or visit, not a fee
Education	$27 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.