What is Mary Brennan's NPI number?

Mary Brennan's National Provider Identifier (NPI) is 1861485872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mary Brennan's specialty?

Mary Brennan is listed in the NPPES registry with a primary specialty of Occupational Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Mary Brennan located?

Mary Brennan's practice location on file with NPPES is 1405 Delaware St, Longview, WA 98632-2326.

What is Mary Brennan's phone number?

The practice phone number listed in the NPPES registry for Mary Brennan is (360) 414-2332.

Is Mary Brennan's NPI active?

Yes — Mary Brennan's NPI (1861485872) is active in the NPPES registry as of the last update on 2025-09-11.

IndividualActive

Mary Brennan, ARNP

NPI 1861485872 · Occupational Health Nurse Practitioner · Longview, WA

Mary Brennan, ARNP is a Occupational Health Nurse Practitioner provider in Longview, WA (NPI 1861485872).

Provider details

NPI number: 1861485872
Entity type: Individual
Primary specialty: Occupational Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: ARNP
Sex: Female
Sole proprietor: No
License: RN00061070 (WA)

Specialties & taxonomies

Occupational Health Nurse PractitionerPrimary363LX0106XLicense AP30001951 (WA)
Physician Assistants & Advanced Practice Nursing Providers
Registered Nurse163W00000XLicense RN00061070 (WA)
Nursing Service Providers
Occupational Health Registered Nurse163WX0106XLicense RN00061070 (WA)
Nursing Service Providers
Adult Health Nurse Practitioner363LA2200XLicense AP30001951 (WA)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

1405 Delaware St

Longview, WA 98632-2326

Phone: (360) 414-2332

Fax: (360) 414-2330

Street-level locationGet directions

More WA providers

Mailing address

Po Box 249

Longview, WA 98632-7154

Enumerated: 2005-08-24
Last updated: 2025-09-11

Frequently asked questions

What is Mary Brennan's NPI number?: Mary Brennan's National Provider Identifier (NPI) is 1861485872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mary Brennan's specialty?: Mary Brennan is listed in the NPPES registry with a primary specialty of Occupational Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Mary Brennan located?: Mary Brennan's practice location on file with NPPES is 1405 Delaware St, Longview, WA 98632-2326.
What is Mary Brennan's phone number?: The practice phone number listed in the NPPES registry for Mary Brennan is (360) 414-2332.
Is Mary Brennan's NPI active?: Yes — Mary Brennan's NPI (1861485872) is active in the NPPES registry as of the last update on 2025-09-11.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.