Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Steven B Koenig, MD

Ophthalmology Physician in Milwaukee, WI · enumerated 2006.

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

National Provider Identifier

1477504868

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Registry record

Entity type Individual (Type 1)

Name Dr. Steven B Koenig

Credential MD

Sex Male

Practice address 925 N 87th St, The Eye Institute, Milwaukee, WI, 53226

Phone (414) 456-2020

Fax (414) 456-6300

Enumeration date May 12, 2006

Last updated in NPPES Mar 4, 2014

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 25324 (WI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
002000122S	Other	-	HUMANA
1477504868	Medicaid	WI	-
180018689	Other	-	RAILROAD MEDICARE

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

How do I verify Steven Koenig's NPI record?

Cross-check NPI 1477504868 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477504868 active?

Yes, as of the latest NPPES snapshot, NPI 1477504868 is active (record last updated 2014-03-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-04.