Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Jacob James Degraaf

Hearing Aid Equipment in Muskegon, MI · enumerated 2008 · practices at Williams Hearing.

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

National Provider Identifier

1417121534

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Registry record

Entity type Individual (Type 1)

Name Jacob James Degraaf

Sex Male

Practice address Muskegon, MI, 49444

Phone (231) 733-2839

Fax (231) 737-1530

Enumeration date Apr 18, 2008

Last updated in NPPES Apr 18, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

332S00000X Hearing Aid Equipment Suppliers · License 3501004916 (MI) Primary

Other identifiers

Identifier	Type	State	Issuer
4273249	Medicaid	MI	-

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 Jacob Degraaf?

The National Provider Identifier (NPI) for Jacob Degraaf is 1417121534, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jacob Degraaf practice?

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

Other providers at this practice address

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Williams Hearing Hearing Aid Equipment · Muskegon, MI NPI 1962431502

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-18.