Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Eye Associates Ltd

Q: What type of organization is Eye Associates Ltd?

Eye Associates Ltd is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

Ophthalmology Physician in Tucson, AZ · enumerated 2007 · authorized official Michael Diesenhouse, President and Ceo.

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

National Provider Identifier

1225254733

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Registry record

Entity type Organization (Type 2)

Legal business name Eye Associates Ltd

Practice address 6130 N La Cholla, Suite 245, Tucson, AZ, 85741

Phone (520) 297-0888

Fax (520) 888-9545

Enumeration date Apr 17, 2007

Last updated in NPPES Mar 6, 2017

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Michael Diesenhouse

Title President and Ceo

Phone (520) 888-6600

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Eye Associates Ltd?

Eye Associates Ltd is registered in NPPES as a Ophthalmology Physician (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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-06.