Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

DIANA N ONWU NP
NPI 1538095948
Nurse Practitioner - Psychiatric/Mental Health in New York, NY

Q: What is Diana Onwu's NPI number?

The NPI number for Diana Onwu is 1538095948. It was assigned to this individual provider in the NPPES registry on June 23, 2026.

Q: What is Diana Onwu'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 Onwu was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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 June 23, 2026

44 W 28TH ST, NEW YORK, NY 10001(212) 545-2400 Get Directions Write a Review

NPPES record added: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 23, 2026, Jul 15, 2026 (2 updates tracked since 2026).

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About Diana N Onwu Np NPPES

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

DIANA N ONWU NP (NPI 1538095948) is an individual psychiatric/mental health provider in New York, New York, licensed in New York (754835-1) and active in the NPI registry since June 2026.

NPPES Registry Identity

NPI1538095948

Entity TypeIndividualFemale

Primary Taxonomy363LP0808X

Provider Legal NameDIANA N ONWUCredential: NP

Location Address44 W 28TH STNew York, NY 10001-4212

Mailing Address44 W 28th StNew York, NY 10001-4212 · (000) 000-0000

Phone(212) 545-2400

Sole ProprietorNo

Enumeration DateJune 23, 2026

Last NPPES UpdateJuly 23, 20262 updates tracked since enumeration

NPPES CertifiedJuly 23, 2026

✔ NPI 1538095948 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

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

Taxonomy Code363LP0808X

License✔ Licensed in NY · 754835-1

44 W 28TH ST, New York, NY 10001

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Other Providers at the Same Location NPPES 2

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

MAGDALENA WIELGAT

Dental Hygienist

44 W 28TH ST
NEW YORK, NY 10001

New York County (212) 545-2409

MS. KATHERINE O'CONNOR

Social Worker (Clinical)

44 W 28TH ST
NEW YORK, NY 10001

New York County (212) 545-2451

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 Onwu's NPI number?

The NPI number for Diana Onwu is 1538095948. It was assigned to this individual provider in the NPPES registry on June 23, 2026.

Where is Diana Onwu located?

Diana Onwu practices at 44 W 28th St, New York, NY 10001. The listed phone number is (212) 545-2400.

What is Diana Onwu's specialty?

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

When was this NPI record last updated?

The NPPES record for Diana Onwu was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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.