NPPES file of Aug 9, 2026

Maria Lynn Osmanski, LCSW

Clinical Social Worker · Chicago, IL

Maria Lynn Osmanski, LCSW is a clinical social worker with a practice address in Chicago, Illinois, and NPI 1972216901, issued on Jan 4, 2023. Check the license (Illinois 149.020523, 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
1972216901
Name
Maria Lynn Osmanski
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
149.020523 IL
Self-reported in NPPES; status is on the state search
Practice location
303 E Wacker Dr, Chicago, IL 60601
Phone
(312) 736-1776
Enumerated
Jan 4, 2023
Record last updated
Jan 4, 2023
Medicare enrollment
Enrolled (PECOS I20230124003479); accepts 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 →

Verify Maria Lynn Osmanski 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 149.020523    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. Vitae Health Medical Illinois, PLLCNiles, IL

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

Maria Lynn Osmanski among 13,637 clinical social worker records in Illinois

Maria Lynn Osmanski, 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 2023, is newer than 81% of them.

  • NPI issued2023 · 81% of these records are older, 13% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated2014 · median 2010 among the 2,895 with a school on file
  • Record last updated2023 · 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).

4,368 clinical social worker records list a practice address in Chicago

They are 4,368 of the 63,379 NPPES records with a practice address in Chicago, and 13,637 clinical social worker records in Illinois.

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

The 8 clinical social worker records with the nearest ZIP codes

  1. Adrienne Ahlquist, LCSWChicago, IL 606011518040419
  2. Ann Brody, L.C.S.W.Chicago, IL 606011801928866
  3. Judith Chapman, LCSWChicago, IL 606011912047416
  4. Diane Dean, MSWChicago, IL 606011699838110
  5. Robert Feldman, LCSWChicago, IL 606011932134319
  6. Lana Friedman Daugherty, PHD LCSWChicago, IL 606011053463091
  7. Nina Helstein, MA PHDChicago, IL 606011235281213
  8. Robert Mardirossian, PH.D.Chicago, IL 606011568553907

Common questions

What is Maria Lynn Osmanski, LCSW's NPI number?

Maria Lynn Osmanski, LCSW's National Provider Identifier (NPI) is 1972216901, issued on Jan 4, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Maria Lynn Osmanski, LCSW located?

The NPPES record lists a practice address at 303 E Wacker Dr, Chicago, IL, 60601. Phone: (312) 736-1776. Providers update this record themselves, so call before visiting.

How can I verify Maria Lynn Osmanski, LCSW's license?

NPPES lists Illinois license number 149.020523, 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.