JOSEPH FRANCIS BIELEFELD PMHNP-BC/FNP
NPI 1124639943
Nurse Practitioner - Psychiatric/Mental Health in Fairfield, CA

Q: What is Joseph Bielefeld's NPI number?

The NPI number for Joseph Bielefeld is 1124639943. It was assigned to this individual provider in the NPPES registry on August 14, 2020.

Q: What is Joseph Bielefeld'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 Joseph Bielefeld was last updated on May 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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 14, 2020

4820 BUSINESS CENTER DR, FAIRFIELD, CA 94534(707) 224-8266(707) 425-9880 Get Directions Write a Review

NPPES record last updated: May 20, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 20, 2025, Sep 10, 2020, Aug 14, 2020 (3 updates tracked since 2020).

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About Joseph Francis Bielefeld Pmhnp-bc/fnp NPPES

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

JOSEPH FRANCIS BIELEFELD PMHNP-BC/FNP (NPI 1124639943) is an individual psychiatric/mental health provider in Fairfield, California, licensed in California (1124639943) and active in the NPI registry since August 2020. He maintains 2 additional practice locations.

NPPES Registry Identity

NPI1124639943

Entity TypeIndividualMale

Primary Taxonomy363LP0808X

Provider Legal NameJOSEPH FRANCIS BIELEFELDCredential: PMHNP-BC/FNP

Location Address4820 BUSINESS CENTER DRFairfield, CA 94534-1696

Mailing Address4820 Business Center Dr Ste 210Fairfield, CA 94534-1696 · (707) 224-8266 · Fax (707) 425-9880

Phone(707) 224-8266

Fax(707) 425-9880

Sole ProprietorYes

Enumeration DateAugust 14, 2020

Last NPPES UpdateMay 20, 20253 updates tracked since enumeration

NPPES CertifiedMay 20, 2025

✔ NPI 1124639943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

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

Taxonomy Code363LP0808X

License✔ Licensed in CA · 1124639943

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License NONE (CA)

4820 BUSINESS CENTER DR, Fairfield, CA 94534

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Secondary Practice Locations 2

Location 12310 1st StNapa, CA 94559-2239 · Phone (707) 224-8266

Location 22300 Northpoint PkwySanta Rosa, CA 95407-5004 · Phone (707) 224-8266

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 12

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

JOSEPH TROY GREENE

Case Manager/Care Coordinator