Individual provider Active NPI

Lina Kassar

  • Psychiatric/Mental Health Nurse Practitioner
  • Glendora, CA
National Provider Identifier
1538052097
Registry record updated Feb 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
License
95035315 Issued in CA
Practice address
510 S Grand Ave Ste 200
Glendora, CA 91741-4291
Phone
(626) 914-1980
NPI assigned
Jun 2, 2025
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 4, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatric/Mental Health Nurse Practitioner 363LP0808X 95035315 CA Primary

Addresses

Primary practice location

510 S Grand Ave Ste 200
Glendora, CA 91741-4291

Mailing address

2118 Wilshire Blvd # 1015
Santa Monica, CA 90403-5704
Phone (626) 914-1980

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
I20251205000840 CA Practitioner - Nurse Practitioner 8123511391 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2025
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
William Gillespie and Associates IncGroup PAC ID 7517181373, 16 clinicians

Practice addresses (Care Compare)

510 S Grand Ave
Suite 200
Glendora, CA 91741-4207

510 S Grand Ave
Suite 200
Glendora, CA 91741-4291
Phone (626) 914-1980

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
95035315CAMDPsychiatric/Mental Health Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
William Gillespie and Associates Inc. CurrentSince Sep 8, 2025 Accepting new patients

Locations

510 S Grand Ave
Ste 200
Glendora, CA 91741
Phone (626) 914-1980

1626 Montana Ave
Ste 645
Santa Monica, CA 90403

Organizations & group practices 1

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": "1748822400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770163200000",
    "number": "1538052097",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2118 WILSHIRE BLVD # 1015",
            "city": "SANTA MONICA",
            "state": "CA",
            "postal_code": "904035704",
            "telephone_number": "626-914-1980",
            "fax_number": "626-914-1984"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "510 S GRAND AVE STE 200",
            "city": "GLENDORA",
            "state": "CA",
            "postal_code": "917414291",
            "telephone_number": "626-914-1980"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KASSAR",
        "first_name": "LINA",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-06-02",
        "last_updated": "2026-02-04",
        "certification_date": "2026-02-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "CA",
            "license": "95035315",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Glendora, CA

Sources for this page

Verify at the official NPI Registry.