John Denning
Diagnostic Radiology Physician · Iowa City, IA
John Denning is a diagnostic radiology physician with a practice address in Iowa City, Iowa, and NPI 1518584614, issued on Jul 6, 2020. Check the license (Iowa MD-55035, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Denning
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- MD-55035 IA
R-11786 IA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hawkins Dr, Iowa City, IA 52242
- Phone
- (917) 586-8507
- Enumerated
- Jul 6, 2020
- Record last updated
- Jul 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20250729001475); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2020
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 364 in Iowa → Look up another NPI →
Also registered at 200 Hawkins Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Helena Aaberg, MDAnesthesiology Physician1689301558
- Abdullah Abbasi, MDGastroenterology Physician1932944204
- Mary Jo Abbott, RPHPharmacist1841325875
- Francois Abboud, MDCardiovascular Disease Physician1598753113
- Abdalla Abdalla, MBBCHAnatomic Pathology & Clinical Pathology Physician1518859826
- Sameh AbdallaAnatomic Pathology & Clinical Pathology Physician1437902160
Verify John Denning in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-55035Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- State University OF IowaIowa City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Denning among 364 diagnostic radiology physician records in Iowa
John Denning 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. Its NPI, issued in 2020, is newer than 81% of them.
- NPI issued2020 · 81% of these records are older, 17% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2020 · median 2006 among the 199 with a school on file
- Record last updated2025 · 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).
140 diagnostic radiology physician records list a practice address in Iowa City
They are 140 of the 7,163 NPPES records with a practice address in Iowa City, and 364 diagnostic radiology physician records in Iowa.
All 364 in Iowa → Every provider in Iowa City → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Darus Bennett, MDIowa City, IA 522421952399800
- Bruce Brown, MDIowa City, IA 522421851389704
- David Cheyney, D.OIowa City, IA 522421194720334
- Michael Dalessandro, MDIowa City, IA 522421871582718
- Georges El-Khoury, MDIowa City, IA 522421861480717
- Edmund Franken, MDIowa City, IA 522421740278696
- Simon Kao, MDIowa City, IA 522421710975669
- David Kuehn, MDIowa City, IA 522421922096874
Common questions
What is John Denning's NPI number?
John Denning's National Provider Identifier (NPI) is 1518584614, issued on Jul 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is John Denning located?
The NPPES record lists a practice address at 200 Hawkins Dr, Iowa City, IA, 52242. Phone: (917) 586-8507. Providers update this record themselves, so call before visiting.
How can I verify John Denning's license?
NPPES lists Iowa license number MD-55035, 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. Medicare files from data.cms.gov. 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.