NPPES file of Aug 9, 2026

John R. Mazurek, MSW

Clinical Social Worker · Arlington Heights, IL

John R. Mazurek, MSW is a clinical social worker with a practice address in Arlington Heights, Illinois, and NPI 1194717553, issued on Aug 21, 2005. Check the license (Illinois 149002459, 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
1194717553
Name
John R. Mazurek
Credential
MSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
149002459 IL
Self-reported in NPPES; status is on the state search
Practice location
637 E Golf RD, Arlington Heights, IL 60005
Phone
(847) 357-9611
Enumerated
Aug 21, 2005
Record last updated
Jun 23, 2010 (not updated in 16 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 637 E Golf RD

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

  1. Steven Coen, LCSWClinical Social Worker1760605208
  2. Nancy Hartman, LCSWClinical Social Worker1124105358
  3. Dong Jung, DCChiropractor1013109040
  4. Anne Kator, LCSWClinical Social Worker1699899534
  5. Kent MorikadoGeneral Practice Dentistry1578577946
  6. George Savarese, PH.D., LCSWClinical Social Worker1497963128

Verify John R. Mazurek 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 149002459
    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

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119 clinical social worker records list a practice address in Arlington Heights

They are 119 of the 2,697 NPPES records with a practice address in Arlington Heights, and 13,637 clinical social worker records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other clinical social worker records in Illinois

  1. Leah A' Hearn, LCSWSavoy, IL1124790829
  2. Bruce AaronChicago, IL1013069087
  3. Melissa Aaron, LCSWWest Frankfort, IL1437505526
  4. Marcus Abate, MSWAurora, IL1679904767
  5. Nadia Abbas, LCSWChicago, IL1578176400
  6. Trisha Abbey, LCSWPalatine, IL1477970176
  7. Mary Abbott, LCSWElgin, IL1073787685
  8. Susan Abbott, LCSWOak Park, IL1235456930
  9. Ghada AbdallaChampaign, IL1235015553
  10. Samella Abdullah, PH.D.Chicago, IL1356404263

Common questions

What is John R. Mazurek, MSW's NPI number?

John R. Mazurek, MSW's National Provider Identifier (NPI) is 1194717553, issued on Aug 21, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John R. Mazurek, MSW located?

The NPPES record lists a practice address at 637 E Golf RD, Arlington Heights, IL, 60005. Phone: (847) 357-9611. Providers update this record themselves, so call before visiting.

How can I verify John R. Mazurek, MSW's license?

NPPES lists Illinois license number 149002459, 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.

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.