Maryellen Karas Lajeunesse, LCSW
Clinical Social Worker · Chicago, IL
Maryellen Karas Lajeunesse, LCSW is a clinical social worker with a practice address in Chicago, Illinois, and NPI 1760034128, issued on Jul 15, 2019. Check the license (Illinois 149.020549, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maryellen Karas Lajeunesse
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 149.020549 IL
Self-reported in NPPES; status is on the state search - Practice location
- 259 E Erie St Ste 1900, Chicago, IL 60611
- Phone
- (312) 695-7950
- Enumerated
- Jul 15, 2019
- Record last updated
- Aug 16, 2022
- Fax
- (312) 695-5747
- Medicare enrollment
- Enrolled (PECOS I20220715001146); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 13,637 in Illinois → Look up another NPI →
Also registered at 259 E Erie St Ste 1900
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maryellen Karas Lajeunesse in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 149.020549Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maryellen Karas Lajeunesse among 13,637 clinical social worker records in Illinois
Maryellen Karas Lajeunesse, 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 2019, is newer than 59% of them.
- NPI issued2019 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2015 · median 2010 among the 2,895 with a school on file
- Record last updated2022 · 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
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- Deborah Gessner, MA LCSWChicago, IL 606111861475253
- John Henson, LCSWChicago, IL 606111194838623
- Jeremy Hisaw, LCSWChicago, IL 606111083701429
- Nora Ishibashi, M.S.W., PH.D.Chicago, IL 606111366515124
- Loren Mercola, LCSWChicago, IL 606111437251980
- Hillery Morris, LCSWChicago, IL 606111144339045
Common questions
What is Maryellen Karas Lajeunesse, LCSW's NPI number?
Maryellen Karas Lajeunesse, LCSW's National Provider Identifier (NPI) is 1760034128, issued on Jul 15, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Maryellen Karas Lajeunesse, LCSW located?
The NPPES record lists a practice address at 259 E Erie St Ste 1900, Chicago, IL, 60611. Phone: (312) 695-7950. Providers update this record themselves, so call before visiting.
How can I verify Maryellen Karas Lajeunesse, LCSW's license?
NPPES lists Illinois license number 149.020549, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
What is Maryellen Karas Lajeunesse, LCSW's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.
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.