NPIMap

Individual provider Active NPI

Hitomi Hosoya, MD

  • Hematology (Internal Medicine) Physician
  • Los Angeles, CA
National Provider Identifier
1265895817
Registry record updated Nov 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X
License
A163013 Issued in CA
Practice address
127 S San Vicente Blvd FL 7
Los Angeles, CA 90048-3311
Phone
(310) 423-1160
Fax
(310) 423-4646
NPI assigned
Mar 31, 2016
Last updated
Nov 4, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 4, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X A163013 CA
Internal Medicine Physician 207R00000X MT210849 PA
Hematology (Internal Medicine) Physician 207RH0000X A163013 CA Primary

Addresses

Primary practice location

127 S San Vicente Blvd FL 7
Los Angeles, CA 90048-3311

Mailing address

4140 W 190TH St
Torrance, CA 90504-5513
Phone (650) 723-4000

Other practice location 1

8700 Beverly Blvd
West Hollywood, CA 90048-1804
Phone (310) 423-1160

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20230331000281 CA Practitioner - Hematology/OncologyPractitioner - Internal Medicine 1658746862 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Internal Medicine
Education
Other, 2009
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Cedars-Sinai Medical CenterGroup PAC ID 0446169114, 788 clinicians

Practice addresses (Care Compare)

8700 Beverly Blvd
West Hollywood, CA 90048-1804
Phone (310) 423-5000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
88.53 of 100Reported as group
Quality
87.08
Promoting interoperability
100
Improvement activities
40
Cost
69.51

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A163013CAMDInternal Medicine Physician
MT210849PAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cedars-Sinai Medical Center CurrentSince Nov 3, 2025 Accepting new patients
Stanford Health Care Internal Medicine Current Accepting new patients
Cedars-Sinai Medical Center CurrentSince Nov 3, 2025 Accepting new patients

Locations

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

4140 W 190th St
Torrance, CA 90504
Phone (310) 967-1780

8700 Beverly Blvd
West Hollywood, CA 90048
Phone (310) 385-3291

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 9

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1459382400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762214400000",
    "number": "1265895817",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4140 W 190TH ST",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905045513",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "127 S SAN VICENTE BLVD FL 7",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900483311",
            "telephone_number": "310-423-1160",
            "fax_number": "310-423-4646"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8700 Beverly Blvd",
            "address_purpose": "LOCATION",
            "city": "West Hollywood",
            "state": "CA",
            "postal_code": "900481804",
            "country_code": "US",
            "telephone_number": "310-423-1160",
            "fax_number": "310-423-4646",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOSOYA",
        "first_name": "HITOMI",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2016-03-31",
        "last_updated": "2025-11-04",
        "certification_date": "2025-11-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A163013",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "MT210849",
            "primary": false
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "CA",
            "license": "A163013",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Los Angeles, CA

Sources for this page

Verify at the official NPI Registry.