Organization Active NPI

Whittier Oncology Medical Clinic, Inc.

  • Radiation Oncology Clinic/Center
  • Whittier, CA
National Provider Identifier
1427101229
Registry record updated Feb 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology Clinic/CenterTaxonomy code 261QX0203X
License
G62716 Issued in CA
Legal business name
WHITTIER ONCOLOGY MEDICAL CLINIC, INC.
Practice address
12393 Washington Blvd
Whittier, CA 90606-2502
Phone
(562) 696-5964
Fax
(562) 693-6940
NPI assigned
Jan 18, 2007
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Feb 24, 2026

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

Authorized official

Name
Dr. Kevin Diao, MDNPI 1578067260
Title
President
Phone
(562) 696-5964

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology Clinic/Center 261QX0203X G62716 CA Primary
Radiation Oncology Clinic/Center 261QX0203X G56388 CA

Addresses

Primary practice location

12393 Washington Blvd
Whittier, CA 90606-2502

Mailing address

12393 Washington Blvd
Whittier, CA 90606-2502
Phone (562) 696-5964

Other identifiers 2

IdentifierTypeStateIssuer
ZZZ72741ZMedicaidCA
ZZZ72741ZOtherCABLUE SHIELD

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20130114000191 CA Part B Supplier - Clinic/Group Practice 5991958415 Receives reassigned benefits from 4 practitioners
Practice locations: Los Angeles, CA; Whittier, CA

National Provider Directory

National Provider Directory

Locations

1245 Wilshire Blvd
Ste 101
Los Angeles, CA 90017
Phone (213) 977-2360

Networks

  • BSC 65 PLUS INDIVIDUAL MAPDPlans: Blue Shield 65 Plus (HMO) (H0504-015-000, H0504); Blue Shield 65 Plus (HMO) (H0504-039-000, H0504); Blue Shield 65 Plus Plan 2 (HMO) (H0504-021-000, H0504); Blue Shield Inspire (HMO) (H0504-041-000, H0504); Blue Shield 65 Plus (HMO) (H0504-038-000, H0504); Blue Shield Inspire (HMO) (H0504-047-000, H0504); Blue Shield 65 Plus (HMO) (H0504-026-000, H0504); Blue Shield Advantage (HMO) (H0504-050-000, H0504); Blue Shield AdvantageOptimum Plan (HMO) (H5928-004-000, H5928); Blue Shield Inspire (HMO) (H0504-043-000, H0504)…

Practitioners & affiliated clinicians

Practitioners 5

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1169078400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1771891200000",
    "number": "1427101229",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12393 WASHINGTON BLVD",
            "city": "WHITTIER",
            "state": "CA",
            "postal_code": "906062502",
            "telephone_number": "562-696-5964",
            "fax_number": "562-464-5120"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12393 WASHINGTON BLVD",
            "city": "WHITTIER",
            "state": "CA",
            "postal_code": "906062502",
            "telephone_number": "562-696-5964",
            "fax_number": "562-693-6940"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WHITTIER ONCOLOGY MEDICAL CLINIC, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-01-18",
        "last_updated": "2026-02-24",
        "certification_date": "2026-02-24",
        "status": "A",
        "authorized_official_last_name": "DIAO",
        "authorized_official_first_name": "KEVIN",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "562-696-5964",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "261QX0203X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Oncology, Radiation",
            "state": "CA",
            "license": "G62716",
            "primary": true
        },
        {
            "code": "261QX0203X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Oncology, Radiation",
            "state": "CA",
            "license": "G56388",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "ZZZ72741Z",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD",
            "identifier": "ZZZ72741Z",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Whittier, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 24, 2026; 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.