Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William R Houskamp, MD

Surgery Physician in Holland, MI · enumerated 2006.

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

National Provider Identifier

1265498398

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Registry record

Entity type Individual (Type 1)

Name William R Houskamp

Credential MD

Sex Male

Practice address 577 Michigan Ave, Suite 202, Holland, MI, 49423

Phone (616) 394-0673

Fax (616) 394-9825

Enumeration date Apr 26, 2006

Last updated in NPPES Jul 29, 2015

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 4301066333 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
4783476	Medicaid	MI	-
382809956	Other	-	COMMERCIAL INSURANCE

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 William Houskamp?

William Houskamp is registered in NPPES with the primary taxonomy of Surgery Physician. 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 2015-07-29.