NPPES file of Aug 9, 2026

Hans Gregory Lonnroth, LCSW

Clinical Social Worker · Oak Brook, IL

Hans Gregory Lonnroth, LCSW is a clinical social worker with a practice address in Oak Brook, Illinois, and NPI 1518966365, issued on Jul 14, 2005. Check the license 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
1518966365
Name
Hans Gregory Lonnroth
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
Practice location
2625 Butterfield RD, Oak Brook, IL 60523
Phone
(630) 574-2010
Enumerated
Jul 14, 2005
Record last updated
Jul 13, 2026
Medicare enrollment
Enrolled (PECOS I20151027002011); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1995
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 2625 Butterfield RD

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

  1. Susan Ackley, LCPCProfessional Counselor1609086552
  2. Yvonne Anderson, LCSW, CADC, MISA IIAddiction (Substance Use Disorder) Counselor1023016565
  3. Latasha BrownProfessional Counselor1356881296
  4. Michael Castellanos, LPCCounselor1841941838
  5. Sombat Chit-Arkhah, PTPhysical Therapist1568713139
  6. Anthony DenealChiropractor1457384372

Verify Hans Gregory Lonnroth 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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Bills Medicare through one group practice

  1. Access Community Health NetworkDes Plaines, IL

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

Hans Gregory Lonnroth among 13,637 clinical social worker records in Illinois

Hans Gregory Lonnroth, 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, over 99% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated1995 · median 2010 among the 2,895 with a school on file
  • Record last updated2026 · 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).

94 clinical social worker records list a practice address in Oak Brook

They are 94 of the 950 NPPES records with a practice address in Oak Brook, and 13,637 clinical social worker records in Illinois.

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

The 8 clinical social worker records with the nearest ZIP codes

  1. Mary Anstiss, LCPCOak Brook, IL 605231508954868
  2. Martha Cook, M.S.W.Oak Brook, IL 605231457402810
  3. Deborah Fullilove, LCSWOak Brook, IL 605231306934518
  4. Tonya Gilkerson-Sobol, LCSWOak Brook, IL 605231447270673
  5. Leslie Gum, LCSWOak Brook, IL 605231437239027
  6. Jennifer Hassler, LCSWOak Brook, IL 605231487742557
  7. Ron Jordan, LCSWOak Brook, IL 605231689762767
  8. Hamida Naficy, MSW LCSWOak Brook, IL 605231467524009

Common questions

What is Hans Gregory Lonnroth, LCSW's NPI number?

Hans Gregory Lonnroth, LCSW's National Provider Identifier (NPI) is 1518966365, issued on Jul 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Hans Gregory Lonnroth, LCSW located?

The NPPES record lists a practice address at 2625 Butterfield RD, Oak Brook, IL, 60523. Phone: (630) 574-2010. Providers update this record themselves, so call before visiting.

How can I verify Hans Gregory Lonnroth, LCSW'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. 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.