Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William M Kaczrowski, MD

Family Medicine Physician in Willmar, MN · enumerated 2007.

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

National Provider Identifier

1578693453

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William M Kaczrowski

Credential MD

Sex Male

Practice address 101 Willmar Ave Sw, Affiliated Community Medical Centers, Willmar, MN, 56201

Phone (320) 231-5000

Fax (320) 231-5067

Enumeration date Mar 7, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 19484 (MN) Primary

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

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

Where does William Kaczrowski practice?

The practice location on file with NPPES is in Willmar, MN. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Kaczrowski?

The National Provider Identifier (NPI) for William Kaczrowski is 1578693453, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.