NPPES file of Aug 9, 2026

Anna Korolczuk

Contractor · Naperville, IL

Anna Korolczuk is a contractor with a practice address in Naperville, Illinois, and NPI 1790069110, issued on Oct 4, 2011. Check the license 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
1790069110
Name
Anna Korolczuk
Primary taxonomy
Contractor 171W00000X
Practice location
800 W 5TH Ave Ste 102A, Naperville, IL 60563
Phone
(630) 639-1655
Enumerated
Oct 4, 2011
Record last updated
Sep 4, 2012 (not updated in 14 years: call before relying on the address or phone)
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 800 W 5TH Ave Ste 102A

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

  1. Jamie BraytonBehavior Analyst1700120649
  2. Emily ChristmasContractor1740684497
  3. Jean Hess, ED.D.Contractor1629409214
  4. Sara Jelinek, MS, BCBAContractor1336661842
  5. Emily MarchContractor1538694997
  6. Katlyn McAuliffeContractor1669733564

Verify Anna Korolczuk in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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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Contractor providers in Illinois

There are 181 contractor records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 181 in Illinois → Every provider in Naperville →

Other contractor records in Illinois

  1. Kadiri AdabaHoffman, IL1093555021
  2. Michele AgneyOak Park, IL1396289096
  3. Ayodele AgunbiadeChicago, IL1538498506
  4. Kehinde AkinrinadeChicago, IL1932511920
  5. Rohsaan AlexanderChicago, IL1043696966
  6. Theresa AlexanderLockport, IL1114840824
  7. Roxana Alvarez, LMTLyons, IL1396144739
  8. Clark AndersonFlossmoor, IL1447783063
  9. Joy AndersonChannahon, IL1841724341
  10. Monica ArchboldGeneva, IL1558535039

Common questions

What is Anna Korolczuk's NPI number?

Anna Korolczuk's National Provider Identifier (NPI) is 1790069110, issued on Oct 4, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Anna Korolczuk located?

The NPPES record lists a practice address at 800 W 5TH Ave Ste 102A, Naperville, IL, 60563. Phone: (630) 639-1655. Providers update this record themselves, so call before visiting.

How can I verify Anna Korolczuk's license?

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.