Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Maryellen Karas Lajeunesse, LCSW

Individual provider Clinical Social Worker · NPI 1760034128

Maryellen Karas Lajeunesse, LCSW is a Clinical Social Worker in Chicago, Illinois. Qualified in 2015, 11 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
11
Licensed in
IL
In the registry since
2019
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

259 E Erie St Ste 1900
Chicago, IL 60611-3246
Phone: (312) 695-7950
Fax: (312) 695-5747
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 149.020549 (IL)

Record details

NPI number1760034128
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJuly 15, 2019
Last updated in NPPESAugust 16, 2022
Certification dateAugust 16, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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