NPPES file of Aug 9, 2026

William Hartong, M.D.

Specialist · Overland Park, KS

William Hartong, M.D. is a specialist with a practice address in Overland Park, Kansas, and NPI 1043280258, issued on Jan 23, 2006. Check the license (Kansas 0414954, as entered in NPPES) with the Kansas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043280258
Name
William Hartong
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
0414954 KS
Self-reported in NPPES; status is on the state search
Practice location
10200 W 105TH St, Overland Park, KS 66212
Phone
(913) 495-9600
Enumerated
Jan 23, 2006
Record last updated
May 4, 2009 (not updated in 17 years: call before relying on the address or phone)
Medicaid ID
100081040A KS
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest specialist records → All 230 in Kansas → Look up another NPI →

Also registered at 10200 W 105TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. William Buser, M.D.Specialist1639159122
  2. Kelci GillenwaterNurse Practitioner1962887109
  3. Donna Graessle, DOGastroenterology Physician1528041472
  4. Jon Nichols, M.D.Specialist1154391654
  5. John Thesing, M.D.Specialist1649240862

Verify William Hartong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Kansas board licenses this profession
    Search for license 0414954    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Kansas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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99% fewer Medicare Part D claims than the average specialist in 2024

11 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.

  1. William Hartong11
  2. Specialty average1,380

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

William Hartong among 230 specialist records in Kansas

William Hartong, M.D. is one of 230 specialist records with a practice address in Kansas. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.

  • NPI issued2006 · 17% of these records are older, 48% newer
  • In a Medicare fileYes · 26% of these records are
  • In the CMS Doctors and Clinicians fileNo · 17% of these records are
  • Record last updated2009 · 83% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Kansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in Kansas

There are 230 specialist records in Kansas.

All 230 in Kansas → Every provider in Overland Park → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Karan Baucom, M.D.Overland Park, KS 662121477684694
  2. Benjamas Bolton, MTOverland Park, KS 662121770714818
  3. William Buser, M.D.Overland Park, KS 662121639159122
  4. Sheryl Geistkemper-Ragland, PTOverland Park, KS 662121871794024
  5. Jon Nichols, M.D.Overland Park, KS 662121154391654
  6. John Thesing, M.D.Overland Park, KS 662121649240862
  7. Stephen Bubb, M.D.Leawood, KS 662111730187741
  8. Howard Ellis, M.D.Leawood, KS 662111629313093

Common questions

What is William Hartong, M.D.'s NPI number?

William Hartong, M.D.'s National Provider Identifier (NPI) is 1043280258, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Hartong, M.D. located?

The NPPES record lists a practice address at 10200 W 105TH St, Overland Park, KS, 66212. Phone: (913) 495-9600. Providers update this record themselves, so call before visiting.

How can I verify William Hartong, M.D.'s license?

NPPES lists Kansas license number 0414954, as entered by the provider. Search the Kansas board that licenses this profession; the NPPES record confirms identity only.

How much does William Hartong, M.D. prescribe under Medicare Part D?

In 2024, William Hartong, M.D. had 11 Medicare Part D claims; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.