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William A. Downey O.D. Inc

Optometrist in South Lake Tahoe, CA · enumerated 2007 · authorized official Melody Quenzer, Optometrist.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1285779397

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Registry record

Entity type Organization (Type 2)
Legal business name William A. Downey O.D. Inc
Practice address 3637 Larch Ave, Suite 2, South Lake Tahoe, CA, 96150
Phone (530) 544-3403
Fax (530) 544-4032
Enumeration date Feb 20, 2007
Last updated in NPPES Sep 14, 2007

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License CA0062010 (CA) Primary

Authorized official

Name Melody Quenzer
Title Optometrist
Phone (530) 544-3403

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What type of organization is William A. Downey O.D. Inc?
William A. Downey O.D. Inc is registered in NPPES as a Optometrist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-14.