NPPES file of Aug 9, 2026

Brendan James Riordan, LCSW

Clinical Social Worker · Berwyn, IL

Brendan James Riordan, LCSW is a clinical social worker with a practice address in Berwyn, Illinois, and NPI 1831258037, issued on Dec 6, 2006. Check the license (Illinois 149013471, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1831258037
Name
Brendan James Riordan
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
149013471 IL
Self-reported in NPPES; status is on the state search
Practice location
6918 Windsor Ave, Berwyn, IL 60402
Phone
(708) 995-3619
Enumerated
Dec 6, 2006
Record last updated
Aug 6, 2024
Medicare enrollment
Enrolled (PECOS I20090723000351); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical social worker records → All 13,637 in Illinois → Look up another NPI →

Also registered at 6918 Windsor Ave

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

  1. Dennis Abreu, LCSWClinical Social Worker1124278825
  2. Matthew AllenStudent in an Organized Health Care Education/Training Program1548516420
  3. John AlliMental Health Counselor1699089672
  4. Selene Arana, M.A.Student in an Organized Health Care Education/Training Program1699022657
  5. John Baker, LCSWClinical Social Worker1669532784
  6. Melissa Bartnick, B.A.Mental Health Counselor1922332386

Verify Brendan James Riordan 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 149013471    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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Bills Medicare through one group practice

  1. Pillars Community HealthBerwyn, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Brendan James Riordan among 13,637 clinical social worker records in Illinois

Brendan James Riordan, LCSW is one of 13,637 clinical social worker records with a practice address in Illinois. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 90% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated2007 · median 2010 among the 2,895 with a school on file
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

88 clinical social worker records list a practice address in Berwyn

They are 88 of the 1,031 NPPES records with a practice address in Berwyn, and 13,637 clinical social worker records in Illinois.

All 13,637 in Illinois → Every provider in Berwyn → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. John Baker, LCSWBerwyn, IL 604021669532784
  2. Christine Freeman, LCSWBerwyn, IL 604021831270032
  3. Ilysa Grossman, LCSWBerwyn, IL 604021568543759
  4. Linda Hinker, MSW LCSWBerwyn, IL 604021114008315
  5. Kerry Lusignan, LCSWBerwyn, IL 604021184799769
  6. Brijida Martinez-Mohabir, LCSWBerwyn, IL 604021841365400
  7. Kathleen O'Hara, LCSWBerwyn, IL 604021295892313
  8. Dan Pioletti, LCSWBerwyn, IL 604021659447712

Common questions

What is Brendan James Riordan, LCSW's NPI number?

Brendan James Riordan, LCSW's National Provider Identifier (NPI) is 1831258037, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Brendan James Riordan, LCSW located?

The NPPES record lists a practice address at 6918 Windsor Ave, Berwyn, IL, 60402. Phone: (708) 995-3619. Providers update this record themselves, so call before visiting.

How can I verify Brendan James Riordan, LCSW's license?

NPPES lists Illinois license number 149013471, 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. Medicare files from data.cms.gov. 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.