Individual provider Active NPI

Karen St Hilaire

  • Family Nurse Practitioner
  • Lancaster, CA
National Provider Identifier
1598154734
Registry record updated Apr 3, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
95001020 Issued in CA
Practice address
335 E Avenue I
Lancaster, CA 93535-1916
Phone
(661) 471-4000
Fax
(661) 524-2944
NPI assigned
Jan 12, 2015
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 3, 2024

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 95001020 CA
Family Health Clinical Nurse Specialist 364SF0001X NP95001020 CA
Family Nurse Practitioner 363LF0000X 95001020 CA Primary

Addresses

Primary practice location

335 E Avenue I
Lancaster, CA 93535-1916

Mailing address

335 E Avenue I
Lancaster, CA 93535-1916
Phone (661) 471-4000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20161117000724 CA Practitioner - Nurse Practitioner 9739468646 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
NP95001020CAMDFamily Health Clinical Nurse Specialist
95001020CAMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
County of Los Angeles CurrentSince Oct 18, 2025 Accepting new patients
County of Los Angeles Auditor Controller CurrentSince Oct 18, 2025 Accepting new patients

Locations

1000 S Fremont Ave
Bldg A11
Alhambra, CA 91803
Phone (626) 457-4240

335 E Avenue I
Lancaster, CA 93535
Phone (661) 471-4000

Organizations & group practices 3

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

NPI Registry JSON

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

{
    "created_epoch": "1421020800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1712102400000",
    "number": "1598154734",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "335 E AVENUE I",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935351916",
            "telephone_number": "661-471-4000",
            "fax_number": "661-524-2944"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "335 E AVENUE I",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935351916",
            "telephone_number": "661-471-4000",
            "fax_number": "661-524-2944"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ST HILAIRE",
        "first_name": "KAREN",
        "name_prefix": "Ms.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2015-01-12",
        "last_updated": "2024-04-03",
        "certification_date": "2024-04-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "95001020",
            "primary": false
        },
        {
            "code": "364SF0001X",
            "taxonomy_group": "",
            "desc": "Clinical Nurse Specialist, Family Health",
            "state": "CA",
            "license": "NP95001020",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95001020",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lancaster, CA

Sources for this page

Verify at the official NPI Registry.