Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Michael Charles Janowak, MD

Otolaryngology Physician in Oconomowoc, WI · enumerated 2006.

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

National Provider Identifier

1285601070

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Registry record

Entity type Individual (Type 1)

Name Mr. Michael Charles Janowak

Credential MD

Sex Male

Practice address 888 Thackeray Trl, Ste 108, Oconomowoc, WI, 53066

Phone (262) 567-0505

Fax (262) 567-0778

Enumeration date Mar 1, 2006

Last updated in NPPES Jan 28, 2013

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 18235 (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
040004256	Other	WI	RAILROAD MEDICARE
000102385	Other	WI	MEDICARE
1004201	Other	WI	PHYSICIANS PLUS
30102900	Medicaid	WI	-
777	Other	WI	DEAN HEALTH PLAN
000168715	Other	WI	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 Michael Janowak's NPI record?

Cross-check NPI 1285601070 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1285601070 active?

Yes, as of the latest NPPES snapshot, NPI 1285601070 is active (record last updated 2013-01-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-28.