Katherine Mattson Halper, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

A190864 Issued in CA

Practice address

757 Westwood PLZ Ste 7501
Los Angeles, CA 90095-7419

Phone

(310) 267-9643

Fax

(310) 267-3840

NPI assigned

Mar 30, 2022

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

HospitalistAlso: Internal Medicine, Pediatric Medicine

Education

University of Southern California Keck School of Medicine, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Regents of the University of CaliforniaGroup PAC ID 1355248584, shared by 11 NPIs, 1,426 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1648598400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783555200000",
    "number": "1669112413",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "757 WESTWOOD PLZ STE 7501",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900957419",
            "telephone_number": "310-267-9643",
            "fax_number": "310-267-3840"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HALPER",
        "first_name": "KATHERINE",
        "middle_name": "MATTSON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-03-30",
        "last_updated": "2026-07-09",
        "certification_date": "2026-07-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A190864",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "A190864",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Halo Consulting Group, Inc.
• Jonathan Haloossim
• Melissa Haloossim, NP
• Victoria Halote, LCSW
• Lisa L Halotek, MSW LCSW
• Morris Halperin, PH.D.
• Leslie Ray Halpern, PSY.D.
• Sarah Halpern, MS CCC SLP
• Marianna Halpert
• Laura Halpin

• Hospitalist Physician in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Hospitalist Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.