BIG OAK RADIOLOGY INC
NPI 1265653554
Clinical Medical Laboratory in Westlake Village, CA

Active since May 02, 2007
2820 TOWNSGATE RD, SUITE 100A, WESTLAKE VILLAGE, CA 91361(805) 367-8219(805) 367-8222 Get Directions Write a Review

NPPES record last updated: February 19, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 8, 2021, Jun 21, 2018 (2 updates tracked since 2018).

About Big Oak Radiology Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BIG OAK RADIOLOGY INC (NPI 1265653554) is a healthcare organization registered as a clinical medical laboratory in Westlake Village, California and active in the NPI registry since May 2007. The organization lists Anthony G Bledin, Radiologist, as its authorized official.

NPPES Registry Identity

NPI1265653554
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameANTHONY BLEDIN M.D. INC
Location Address2820 TOWNSGATE RD, SUITE 100AWestlake Village, CA 91361-3000
Mailing Address1851 Holser Walk, Suite 220Oxnard, CA 93036-2626 · (805) 494-9940 · Fax (805) 494-9948
Fax(805) 367-8222
Organization SubpartNo
Authorized OfficialAnthony G BledinRadiologist · (805) 988-1111
Enumeration DateMay 2, 2007
Last NPPES UpdateFebruary 19, 20242 updates tracked since enumeration
NPPES CertifiedFebruary 19, 2024
✔ NPI 1265653554 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
License✔ Licensed in CA · C42124
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
2820 TOWNSGATE RD, Westlake Village, CA 91361

Other Names 1

Doing Business AsBig Oak Radiology Inc

Other Identifiers 1

Medicaid00C421240CA

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Big Oak Radiology Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by March 31, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20120524000478Non-DME Part B · Clinic/Group PracticeDue dateMarch 31, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Big Oak Radiology Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Diagnostic Radiology
NPI 1588687115
1851 HOLSER WALK SUITE 220
Oxnard, CA 93036
(805) 988-1111
✔ PECOS✔ Accepts Medicare20 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Anthony Bledin M.D. Inc's NPI number?

The NPI number for Anthony Bledin M.D. Inc is 1265653554. It was assigned to this organization in the NPPES registry on May 2, 2007. The provider is doing business as Big Oak Radiology Inc.

Where is Anthony Bledin M.D. Inc located?

Anthony Bledin M.D. Inc is located at 2820 Townsgate Rd Suite 100A, Westlake Village, CA 91361. The listed phone number is (805) 367-8219.

What is Anthony Bledin M.D. Inc's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Is Anthony Bledin M.D. Inc enrolled in Medicare?

Yes. Anthony Bledin M.D. Inc is registered in the Medicare PECOS enrollment system.

When is Anthony Bledin M.D. Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by March 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Anthony Bledin M.D. Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Diagnostic Radiology) reassigns their Medicare billing to Anthony Bledin M.D. Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Anthony Bledin M.D. Inc was last updated on February 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.