Stefanie A Proia, CPNP

Primary specialty

Pediatric Nurse PractitionerTaxonomy code 363LP0200X

License

NP18431 Issued in CA

Practice address

18546 Roscoe Blvd
Suite 211
Northridge, CA 91324-4663

Phone

(818) 885-8040

Fax

(818) 267-5633

NPI assigned

Sep 10, 2008

Last updated

May 22, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Certified Pediatric Nurse Practitioner, Nurse Practitioner

State licenses

Practice roles

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.

• Dignity Community Care

  dba Northridge Hospital Medical Center

  • General Acute Care Hospital
  • Northridge, CA
  • NPI 1417089350
  NPD (past)
• Tarzana Medical Center LLC

  dba Providence Cedars-Sinai Tarzana Medical Center

  • General Acute Care Hospital
  • Tarzana, CA
  • NPI 1821250762
  NPD (past)

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

{
    "created_epoch": "1221004800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779408000000",
    "number": "1700035193",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18546 ROSCOE BLVD",
            "address_2": "SUITE 211",
            "city": "NORTHRIDGE",
            "state": "CA",
            "postal_code": "913244663",
            "telephone_number": "818-885-8040",
            "fax_number": "818-267-5633"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18546 ROSCOE BLVD",
            "address_2": "SUITE 211",
            "city": "NORTHRIDGE",
            "state": "CA",
            "postal_code": "913244663",
            "telephone_number": "818-885-8040",
            "fax_number": "818-267-5633"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "425 Haaland Dr Ste 104",
            "address_purpose": "LOCATION",
            "city": "Thousand Oaks",
            "state": "CA",
            "postal_code": "913615230",
            "country_code": "US",
            "telephone_number": "805-494-1948",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PROIA",
        "first_name": "STEFANIE",
        "middle_name": "A",
        "credential": "CPNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-09-10",
        "last_updated": "2026-05-22",
        "certification_date": "2026-05-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Pediatrics",
            "state": "CA",
            "license": "NP18431",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Prime Care Associates a Medical Corporation
• Prime Healthcare ASC - Northridge LLC (Prime Healthcare Surgical Center of the Valley)
• Lesley C Prince, MD
• Procare First Home Health,Inc.
• Professional Lifecare Hospice, Inc.
• Crystal Prosper
• Prosperous Hospice Care Inc
• Luke Provchy
• Psychiatry and Mental Health, a Physician Assistant Corporation
• Psychological Treatment Services Inc

• Pediatric Nurse Practitioner in Northridge, CA
• Providers in Northridge, CA by specialty
• Pediatric Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 22, 2026; 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.