Joseph Francis Bielefeld, PMHNP-BC/FNP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

1124639943 Issued in CA

Practice address

4820 Business Center Dr
Fairfield, CA 94534-1696

Phone

(707) 224-8266

Fax

(707) 425-9880

NPI assigned

Aug 14, 2020

Last updated

May 20, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Aldea Inc

  • Community/Behavioral Health Agency
  • Fairfield, CA
  • NPI 1023419652
  NPD
• Aldea, Inc

  • Community/Behavioral Health Agency
  • Fairfield, CA
  • NPI 1972897346
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1597363200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747699200000",
    "number": "1124639943",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4820 BUSINESS CENTER DR STE 210",
            "city": "FAIRFIELD",
            "state": "CA",
            "postal_code": "945341696",
            "telephone_number": "707-224-8266",
            "fax_number": "707-425-9880"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4820 BUSINESS CENTER DR",
            "city": "FAIRFIELD",
            "state": "CA",
            "postal_code": "945341696",
            "telephone_number": "707-224-8266",
            "fax_number": "707-425-9880"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2310 1st St",
            "address_purpose": "LOCATION",
            "city": "Napa",
            "state": "CA",
            "postal_code": "945592239",
            "country_code": "US",
            "telephone_number": "707-224-8266",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2300 Northpoint Pkwy",
            "address_purpose": "LOCATION",
            "city": "Santa Rosa",
            "state": "CA",
            "postal_code": "954075004",
            "country_code": "US",
            "telephone_number": "707-224-8266",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BIELEFELD",
        "first_name": "JOSEPH",
        "middle_name": "FRANCIS",
        "credential": "PMHNP-BC/FNP",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2020-08-14",
        "last_updated": "2025-05-20",
        "certification_date": "2025-05-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "NONE",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "CA",
            "license": "1124639943",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://www.aldeainc.org/",
            "affiliation": "N",
            "endpointDescription": "Fairfield",
            "address_1": "2310 1st St",
            "city": "Napa",
            "state": "CA",
            "country_code": "US",
            "postal_code": "945592239",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Psychiatric/Mental Health Nurse Practitioner in Fairfield, CA
• Providers in Fairfield, CA by specialty
• Psychiatric/Mental Health Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.