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DARREN F OSTERLOH
NPI 1487020483
Optometrist in Westlake Village, CA

Active since August 13, 2015
3900 E THOUSAND OAKS BLVD, SUITE 203, WESTLAKE VILLAGE, CA 91362(805) 777-8888 Get Directions Write a Review

NPPES record last updated: March 9, 2016. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Darren F Osterloh NPPES

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

DARREN F OSTERLOH (NPI 1487020483) is a healthcare organization registered as an optometrist in Westlake Village, California and active in the NPI registry since August 2015. The organization lists Darren Osterloh, Doctor/owner, as its authorized official.

NPPES Registry Identity

NPI1487020483
Entity TypeOrganization
Primary Taxonomy152W00000X
Legal Business NameDARREN OSTERLOH OD INC
Location Address3900 E THOUSAND OAKS BLVD, SUITE 203Westlake Village, CA 91362-3654
Mailing Address3900 E Thousand Oaks Blvd, Suite 203Westlake Village, CA 91362-3654 · (805) 777-8888
Phone(805) 777-8888
Organization SubpartNo
Authorized OfficialDarren OsterlohDoctor/owner · (805) 777-8888
Enumeration DateAugust 13, 2015
Last NPPES UpdateMarch 9, 2016
✔ NPI 1487020483 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in CA · OPT9922
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
3900 E THOUSAND OAKS BLVD, Westlake Village, CA 91362
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Other Names 1

Other NameDarren F Osterloh

Other Identifiers 2

Medicare UPIN284357CA
Medicare PINOP9922CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Darren F Osterloh is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Darren F Osterloh, which bills Medicare for the services this clinician delivers.

Clinician (1)

Darren Osterloh, OD
Optometry
NPI 1124076849
3900 E THOUSAND OAKS BLVD SUITE 203
Westlake Village, CA 91362
(805) 777-8888
✔ PECOS✔ Accepts MedicareSame address

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 Darren Osterloh Od Inc's NPI number?

The NPI number for Darren Osterloh Od Inc is 1487020483. It was assigned to this organization in the NPPES registry on August 13, 2015. The provider is also known as Darren F Osterloh.

Where is Darren Osterloh Od Inc located?

Darren Osterloh Od Inc is located at 3900 E Thousand Oaks Blvd Suite 203, Westlake Village, CA 91362. The listed phone number is (805) 777-8888.

What is Darren Osterloh Od Inc's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Darren Osterloh Od Inc enrolled in Medicare?

Yes. Darren Osterloh Od Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Darren Osterloh Od Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Optometry) reassigns their Medicare billing to Darren Osterloh Od 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 Darren Osterloh Od Inc was last updated on March 9, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.