Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Justin Adam Ferkin, DO

Family Medicine Physician in Waukesha, WI · enumerated 2025.

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

National Provider Identifier

1770386633

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Registry record

Entity type Individual (Type 1)

Name Justin Adam Ferkin

Credential DO

Sex Male

Practice address 210 Nw Barstow St, Waukesha, WI, 53188

Phone (262) 548-6903

Enumeration date Mar 28, 2025

Last updated in NPPES Mar 28, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License PAR-0000650229 (WI) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Justin Ferkin practice?

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

What is the NPI number for Justin Ferkin?

The National Provider Identifier (NPI) for Justin Ferkin is 1770386633, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-28.