Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Hartong, M.D.

Specialist in Overland Park, KS · enumerated 2006.

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

National Provider Identifier

1043280258

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Registry record

Entity type Individual (Type 1)

Name Dr. William Hartong

Credential M.D.

Sex Male

Practice address 10200 W 105th St, Overland Park, KS, 66212

Phone (913) 495-9600

Enumeration date Jan 23, 2006

Last updated in NPPES May 4, 2009

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 0414954 (KS) 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
1583891B	Other	MO	MEDICARE
1583891C	Other	KS	MEDICARE
100081040A	Medicaid	KS	-

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 William Hartong?

The National Provider Identifier (NPI) for William Hartong is 1043280258, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Hartong practice?

The practice location on file with NPPES is in Overland Park, KS. 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 2009-05-04.