Janet M Stier PHD Clinical Psychologist PC

Primary specialty

Adolescent and Children Mental Health Clinic/CenterTaxonomy code 261QM0855X

Legal business name

JANET M STIER PHD CLINICAL PSYCHOLOGIST PC

Practice address

23822 Valencia Blvd Ste 203
Valencia, CA 91355-5344

Phone

(661) 310-8410

Fax

(661) 678-0711

NPI assigned

Feb 3, 2025

Last updated

Sep 2, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Dr. Janet M Stier, PH.D.NPI 1376809921

Title

Clinical Psychologist/President

Phone

(661) 310-8410

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Janet Miller Stier, PH.D.

  • Clinical Psychologist
  • Santa Clarita, CA
  • NPI 1376809921
  Medicare reassignment NPD Authorized official
• Mayra Albertini Bullon, LMFT

  • Marriage & Family Therapist
  • Valencia, CA
  • NPI 1134353832
  NPD (past)
• Bobi Marie Stone

  • Marriage & Family Therapist
  • Newhall, CA
  • NPI 1457584526
  NPD (past)

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

{
    "created_epoch": "1738540800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1756771200000",
    "number": "1861206781",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "23822 VALENCIA BLVD STE 203",
            "city": "VALENCIA",
            "state": "CA",
            "postal_code": "913555344",
            "telephone_number": "661-310-8410",
            "fax_number": "661-678-0711"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "23822 VALENCIA BLVD STE 203",
            "city": "VALENCIA",
            "state": "CA",
            "postal_code": "913555344",
            "telephone_number": "661-310-8410",
            "fax_number": "661-678-0711"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JANET M STIER PHD CLINICAL PSYCHOLOGIST PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-02-03",
        "last_updated": "2025-09-02",
        "certification_date": "2025-09-02",
        "status": "A",
        "authorized_official_last_name": "STIER",
        "authorized_official_first_name": "JANET",
        "authorized_official_middle_name": "M",
        "authorized_official_title_or_position": "CLINICAL PSYCHOLOGIST/PRESIDENT",
        "authorized_official_telephone_number": "661-310-8410",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "PH.D."
    },
    "taxonomies": [
        {
            "code": "261QM0850X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adult Mental Health",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "261QM0855X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adolescent and Children Mental Health",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alondra James, LCSW
• Samantha Nicole Jamili, AMFT
• Sara Janami, OD
• Jan Bermejo Janay, M.D.
• Claudia Martine Janes, MS MFT
• Eunice Sinae Jang
• Giselle Jaramillo
• Jacqueline Jaramillo
• Paloma Jaramillo
• Mariah Alexandra Jarnat

• Adolescent and Children Mental Health Clinic/Center in Valencia, CA
• Providers in Valencia, CA by specialty
• Adolescent and Children Mental Health Clinic/Center in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 2, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.