Active NPI
Whittier Oncology Medical Clinic, Inc.
- Radiation Oncology Clinic/Center
- Whittier, CA
National Provider Identifier
1427101229
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Radiation Oncology Clinic/Center
- License
- G62716
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Dr. Kevin Diao, MD
- 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) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| ZZZ72741Z | Medicaid | CA | |
| ZZZ72741Z | Other | CA | BLUE SHIELD |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
Enrollment records 1
National Provider Directory
National Provider DirectoryLocations
1245 Wilshire Blvd
Ste 101
Los Angeles, CA 90017
Phone (213) 977-2360
Networks
- BSC 65 PLUS INDIVIDUAL MAPD
Practitioners & affiliated clinicians
Practitioners 5
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.
-
- Radiation Oncology Physician
- Whittier, CA
- NPI 1578067260
-
- Radiation Oncology Physician
- Los Angeles, CA
- NPI 1740626019
-
- Radiation Oncology Physician
- Whittier, CA
- NPI 1073665618
-
- Radiation Oncology Physician
- Whittier, CA
- NPI 1174973739
-
- Optometrist
- Seal Beach, CA
- NPI 1053472407
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
- Whittier Kidney Dialysis Center
- Whittier Medical Homecare Supply
- Whittier Medical Homecare Supply Inc
- Whittier Modern Dentistry Dental Group
- Whittier Nursing and Wellness Center, Inc
- Whittier Outpatient Surgery Center
- Whittier Outpatient Surgery Center Inc
- Whittier Pathology Medical Group
- Whittier Pediatric Group
- Whittier Pharmacy Inc
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.