Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

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.

See every abbreviation used in this directory →

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

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 number1356885289
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedDecember 12, 2016
Last updated in NPPESJuly 29, 2025
Certification dateJuly 29, 2025