Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David J Kratzer, OT

Occupational Therapist in Milwaukee, WI · enumerated 2005.

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

National Provider Identifier

1033119102

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Registry record

Entity type Individual (Type 1)

Name David J Kratzer

Credential OT

Sex Male

Practice address 316 N Milwaukee St, 208, Milwaukee, WI, 53202

Phone (414) 615-0665

Fax (414) 615-0667

Enumeration date Jul 29, 2005

Last updated in NPPES Oct 19, 2015

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 4191-26 (WI) Primary

OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT credential

Other identifiers

Identifier	Type	State	Issuer
41063100	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 the NPI number for David Kratzer?

The National Provider Identifier (NPI) for David Kratzer is 1033119102, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Kratzer practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-19.