NPPES file of Aug 9, 2026

John Edward Duffy

Registered Nurse · Chicago, IL

John Edward Duffy is a registered nurse with a practice address in Chicago, Illinois, and NPI 1255250338, issued on Jul 13, 2026. Check the license (Illinois 041.583659, as entered in NPPES) with the Illinois board that licenses this profession; 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
1255250338
Name
John Edward Duffy
Primary taxonomy
Registered Nurse 163W00000X
License number
041.583659 IL
Self-reported in NPPES; status is on the state search
Practice location
235 W Van Buren St Unit 2103, Chicago, IL 60607
Phone
(312) 623-2293
Enumerated
Jul 13, 2026
Record last updated
Jul 13, 2026
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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Verify John Edward Duffy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 041.583659    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 Illinois 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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Registered Nurse providers in Illinois

There are 2,628 registered nurse records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,628 in Illinois → Every provider in Chicago →

Other registered nurse records in Illinois

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  2. Cindy AbundizAddison, IL1831907823
  3. Jean Ackerson, APRN-BCWauconda, IL1932458189
  4. Carrie AdamanyRockford, IL1912407966
  5. Kelsie AdamsSpringfield, IL1568255081
  6. Lynnetta AdamsBlue Island, IL1396628095
  7. Rachelle Adams, RNMount Carmel, IL1174272660
  8. Micaela Adams-Carr, MSN, RNKankakee, IL1992476840
  9. Suset AdanWestmont, IL1144198672
  10. Craig AddisonChicago, IL1568856219

Common questions

What is John Edward Duffy's NPI number?

John Edward Duffy's National Provider Identifier (NPI) is 1255250338, issued on Jul 13, 2026. An NPI identifies a provider in billing; it is not a license.

Where is John Edward Duffy located?

The NPPES record lists a practice address at 235 W Van Buren St Unit 2103, Chicago, IL, 60607. Phone: (312) 623-2293. Providers update this record themselves, so call before visiting.

How can I verify John Edward Duffy's license?

NPPES lists Illinois license number 041.583659, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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. 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.