Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathan Peter Zeiger, MSW APSW

Psychologist in Milwaukee, WI · enumerated 2006.

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

National Provider Identifier

1790893840

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Registry record

Entity type Individual (Type 1)

Name Nathan Peter Zeiger

Credential MSW APSW

Sex Male

Practice address 5151 W Silver Spring Dr, Milwaukee, WI, 53218

Phone (414) 527-6970

Fax (414) 527-6971

Enumeration date Aug 28, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 1155121 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
39748200	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 Nathan Zeiger?

The National Provider Identifier (NPI) for Nathan Zeiger is 1790893840, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nathan Zeiger practice?

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

Other providers at this practice address

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