Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adam J Holmbeck, APNP

Family Nurse Practitioner in Milwaukee, WI · enumerated 2021.

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

National Provider Identifier

1578130662

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Registry record

Entity type Individual (Type 1)

Name Adam J Holmbeck

Credential APNP

Sex Male

Practice address 9200 W Wisconsin Ave, Milwaukee, WI, 53226

Phone (414) 955-6900

Fax (414) 955-0079

Enumeration date Jun 7, 2021

Last updated in NPPES Dec 15, 2021

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 11591 (WI) Primary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 221516 (WI) Secondary

Other identifiers

Identifier	Type	State	Issuer
1578130662	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 specialty is Adam Holmbeck?

Adam Holmbeck is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-15.