WILLIAM R. LOSIE O.D. P.C.
NPI 1275800559
Optometrist in Eugene, OR

Q: What is William R. Losie O.D. P.C.'s NPI number?

The NPI number for William R. Losie O.D. P.C. is 1275800559. It was assigned to this organization in the NPPES registry on November 30, 2011.

Q: What is William R. Losie O.D. P.C.'s specialty?

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

Active since November 30, 2011

1680 CHAMBERS ST, SUITE 101, EUGENE, OR 97402(541) 686-1117(541) 687-2158 Get Directions Write a Review

NPPES record last updated: April 6, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About William R. Losie O.d. P.c. NPPES

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

WILLIAM R. LOSIE O.D. P.C. (NPI 1275800559) is a healthcare organization registered as an optometrist in Eugene, Oregon and active in the NPI registry since November 2011. The organization lists William Ray Losie, President, as its authorized official.

NPPES Registry Identity

NPI1275800559

Entity TypeOrganization

Primary Taxonomy152W00000X

Legal Business NameWILLIAM R. LOSIE O.D. P.C.

Location Address1680 CHAMBERS ST, SUITE 101Eugene, OR 97402-3655

Mailing Address1680 Chambers St, Suite 101Eugene, OR 97402-3655 · (541) 686-1117 · Fax (541) 687-2158

Phone(541) 686-1117

Fax(541) 687-2158

Organization SubpartNo

Authorized OfficialWilliam Ray LosiePresident · (541) 686-1117

Enumeration DateNovember 30, 2011

Last NPPES UpdateApril 6, 2020

NPPES CertifiedApril 6, 2020

✔ NPI 1275800559 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 8

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in OR · 1709ATI

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.

Also ListedOptometrist · Corneal and Contact ManagementTaxonomy 152WC0802X · License 1709ATI (OR)

Also ListedOptometrist · Low Vision RehabilitationTaxonomy 152WL0500X · License 1709ATI (OR)

Also ListedOptometrist · PediatricsTaxonomy 152WP0200X · License 1709ATI (OR)

Also ListedOptometrist · Sports VisionTaxonomy 152WS0006X · License 1709ATI (OR)

Also ListedOptometrist · Vision TherapyTaxonomy 152WV0400X · License 1709ATI (OR)

Also ListedOptometrist · Occupational VisionTaxonomy 152WX0102X · License 1709ATI (OR)

Also ListedEyewear SupplierTaxonomy 332H00000X

1680 CHAMBERS ST, Eugene, OR 97402

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Other Identifiers 2

Medicaid108225OR

OtherPOOO70376OR · Railroad Medicare

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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc..Insurance ›

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)

William R. Losie O.d. P.c. 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

StateOregonEnrollment IDO20120214000298Non-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 William R. Losie O.D. P.C., which bills Medicare for the services this clinician delivers.

Clinician (1)

William Losie, O.D.

Optometry

NPI 1104952910

1680 CHAMBERS ST STE 101
Eugene, OR 97402

(541) 686-1117

✔ 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 William R. Losie O.D. P.C.'s NPI number?

The NPI number for William R. Losie O.D. P.C. is 1275800559. It was assigned to this organization in the NPPES registry on November 30, 2011.

Where is William R. Losie O.D. P.C. located?

William R. Losie O.D. P.C. is located at 1680 Chambers St Suite 101, Eugene, OR 97402. The listed phone number is (541) 686-1117.

What is William R. Losie O.D. P.C.'s specialty?

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

Is William R. Losie O.D. P.C. enrolled in Medicare?

Yes. William R. Losie O.D. P.C. is registered in the Medicare PECOS enrollment system.

When is William R. Losie O.D. P.C.'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 (Oregon, 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 William R. Losie O.D. P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Optometry) reassigns their Medicare billing to William R. Losie O.D. P.C.. 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.

What insurance does William R. Losie O.D. P.C. accept?

Health plans from Moda Health Plan, Inc. list William R. Losie O.D. P.C. as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William R. Losie O.D. P.C. was last updated on April 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.