Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Eye Physician Associates, S.C.

Q: What type of organization is Eye Physician Associates, S.C.?

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

Ophthalmology Physician in Greenfield, WI · enumerated 2023 · authorized official Charles Yang, Medical Director.

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

National Provider Identifier

1174217178

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Registry record

Entity type Organization (Type 2)

Legal business name Eye Physician Associates, S.C.

Other name <Unavail>

Practice address 4300 West Layton Avenue, Ste 100, Greenfield, WI, 53220

Phone (414) 928-2020

Fax (414) 210-3402

Enumeration date Jun 5, 2023

Last updated in NPPES Mar 19, 2024

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Charles Yang

Title Medical Director

Phone (414) 928-2020

Other identifiers

Identifier	Type	State	Issuer
32306500	Medicaid	WI	-
32735700	Medicaid	WI	-
0264580001	Other	WI	DME
34249800	Medicaid	WI	-
34678800	Medicaid	WI	-
38616200	Medicaid	WI	-
38622400	Medicaid	WI	-

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 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.

What type of organization is Eye Physician Associates, S.C.?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-19.