SIAVHAN O'BRIEN FNP-C
NPI 1821924002
Nurse Practitioner - Primary Care in Tucson, AZ

Active since June 23, 2026
334 N MEDFORD DR, TUCSON, AZ 85710(520) 729-0327 Get Directions Write a Review

NPPES record last updated: June 23, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Siavhan O'brien Fnp-c NPPES

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

SIAVHAN O'BRIEN FNP-C (NPI 1821924002) is an individual primary care provider in Tucson, Arizona, licensed in Arizona (341597) and active in the NPI registry since June 2026.

NPPES Registry Identity

NPI1821924002
Entity TypeIndividualFemale
Primary Taxonomy363LP2300X
Provider Legal NameSIAVHAN O'BRIENCredential: FNP-C
Location Address334 N MEDFORD DRTucson, AZ 85710-2571
Mailing Address334 N Medford DrTucson, AZ 85710-2571 · (520) 729-0327
Sole ProprietorYes
Enumeration DateJune 23, 2026
NPPES CertifiedJune 23, 2026
NPI 1821924002 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · Primary CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP2300X
License Licensed in AZ · 341597
334 N MEDFORD DR, Tucson, AZ 85710

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 Siavhan O'brien's NPI number?

The NPI number for Siavhan O'brien is 1821924002. It was assigned to this individual provider in the NPPES registry on June 23, 2026.

Where is Siavhan O'brien located?

Siavhan O'brien practices at 334 N Medford Dr, Tucson, AZ 85710. The listed phone number is (520) 729-0327.

What is Siavhan O'brien's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.

When was this NPI record last updated?

The NPPES record for Siavhan O'brien was last updated on June 23, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.