NPPES file of Aug 9, 2026

John Dee Shierholz, M.D.

Diagnostic Radiology Physician · Ames, IA

John Dee Shierholz, M.D. is a diagnostic radiology physician with a practice address in Ames, Iowa, and NPI 1184605560, issued on Nov 11, 2005. Check the license (Iowa 18452, as entered in NPPES) on the Iowa Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1184605560
Name
John Dee Shierholz
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
18452 IA
Self-reported in NPPES; status is on the state search
Practice location
1215 Duff Ave, Ames, IA 50010
Phone
(515) 239-4456
Enumerated
Nov 11, 2005
Record last updated
Jul 13, 2026
Fax
(515) 239-4761
Medicaid ID
0178855 IA
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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Also registered at 1215 Duff Ave

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

  1. Christopher AlbertPharmacist1811480056
  2. Jill AlexanderPediatrics Physician1851387591
  3. Rupal Amin, M.D.Internal Medicine Physician1225024995
  4. Trisha Andersen, DOAnatomic Pathology & Clinical Pathology Physician1518917947
  5. Randy Anderson, MDDiagnostic Radiology Physician1912115288
  6. Manuel Arbelaez Agudelo, MDInternal Medicine Physician1093237562

Verify John Dee Shierholz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license 18452
    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
Open the Iowa 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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John Dee Shierholz among 364 diagnostic radiology physician records in Iowa

John Dee Shierholz, M.D. is one of 364 diagnostic radiology physician records with a practice address in Iowa. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 80% newer
  • In a Medicare fileNo · 61% of these records are
  • In the CMS Doctors and Clinicians fileNo · 55% of these records are
  • Record last updated2026 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in Iowa

There are 364 diagnostic radiology physician records in Iowa. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Randy Anderson, MDAmes, IA 500101912115288
  2. Kyle Freeman, M.D.Ames, IA 500101568826865
  3. Dean Gute, MDAmes, IA 500101225144975
  4. Karl HamoucheAmes, IA 500101003309766
  5. Douglas Lake, MDAmes, IA 500101194808394
  6. Mark Lee, D.O.Ames, IA 500101245625003
  7. Tyler McCurdy, D.O.Ames, IA 500101902267198
  8. John McGarity, D.O.Ames, IA 500101538591896

Common questions

What is John Dee Shierholz, M.D.'s NPI number?

John Dee Shierholz, M.D.'s National Provider Identifier (NPI) is 1184605560, issued on Nov 11, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John Dee Shierholz, M.D. located?

The NPPES record lists a practice address at 1215 Duff Ave, Ames, IA, 50010. Phone: (515) 239-4456. Providers update this record themselves, so call before visiting.

How can I verify John Dee Shierholz, M.D.'s license?

NPPES lists Iowa license number 18452, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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

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.