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Dennis E. Ratinoff

Optometrist in Palo Alto, CA · enumerated 2006 · authorized official Dennis Ratinoff, Owner.

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

National Provider Identifier

1366400673

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Registry record

Entity type Organization (Type 2)
Legal business name Dennis E. Ratinoff
Other name <Unavail>
Practice address 725 University Ave, Ste. A, Palo Alto, CA, 94301
Phone (650) 329-1600
Fax (650) 329-8474
Enumeration date May 3, 2006
Last updated in NPPES Oct 3, 2013

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Dennis Ratinoff
Title Owner
Phone (650) 329-1600

Other identifiers

Identifier Type State Issuer
ZZZ30173Z Other - MEDICARE ID

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 Dennis E. Ratinoff?
Dennis E. Ratinoff 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 2013-10-03.