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

OLIVIA MARIE O'BRIEN
NPI 1396651865
Nutritionist in Portland, OR

Q: What is Olivia O'brien's NPI number?

The NPI number for Olivia O'brien is 1396651865. It was assigned to this individual provider in the NPPES registry on August 24, 2026.

Q: What is Olivia O'brien's specialty?

The primary specialty registered for this NPI is Nutritionist with taxonomy code 133N00000X.

Q: When was this NPI record last updated?

The NPPES record for Olivia O'brien was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 August 24, 2026

1929 NW IRVING ST APT 110, PORTLAND, OR 97209(541) 729-3207 Get Directions Write a Review

NPPES record added: August 24, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Olivia Marie O'brien NPPES

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

OLIVIA MARIE O'BRIEN (NPI 1396651865) is an individual nutritionist in Portland, Oregon and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1396651865

Entity TypeIndividualFemale

Primary Taxonomy133N00000X

Provider Legal NameOLIVIA MARIE O'BRIEN

Location Address1929 NW IRVING ST APT 110Portland, OR 97209-1235

Mailing Address1929 Nw Irving St Apt 110Portland, OR 97209-1235

Phone(541) 729-3207

Sole ProprietorYes

Enumeration DateAugust 24, 2026

NPPES CertifiedAugust 23, 2026

✔ NPI 1396651865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNutritionistDietary & Nutritional Service Providers

Taxonomy Code133N00000X

Definition

A specialist in adapting and applying food and nutrient knowledge to the solution of food and nutritional problems, the control of disease, and the promotion of health. Nutritionists perform research, instruct groups and individuals about nutritional requirements, and assist people in developing meal patterns that meet their nutritional needs; (2) A nutritionist is someone who has completed undergraduate and/or graduate training in the discipline of nutrition without necessarily meeting the academic and experience requirements to qualify for the Registered Dietitian designation.

1929 NW IRVING ST APT 110, Portland, OR 97209

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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 Olivia O'brien's NPI number?

The NPI number for Olivia O'brien is 1396651865. It was assigned to this individual provider in the NPPES registry on August 24, 2026.

Where is Olivia O'brien located?

Olivia O'brien practices at 1929 NW Irving St Apt 110, Portland, OR 97209. The listed phone number is (541) 729-3207.

What is Olivia O'brien's specialty?

The primary specialty registered for this NPI is Nutritionist with taxonomy code 133N00000X.

When was this NPI record last updated?

The NPPES record for Olivia O'brien was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.