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

Lydia Leffelman, LCSW

Individual provider Clinical Social Worker · NPI 1821882077

Lydia Leffelman, LCSW is a Clinical Social Worker in Chicago, Illinois. Graduated from Loyola University of Chicago, Stritch School of Medicine in 2017, 9 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
9
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL
In the registry since
2025
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

676 N Saint Clair St Ste 1100
Chicago, IL 60611-2954
Phone: (312) 695-5060
Fax: (312) 695-5010
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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 149022062 (IL)

Record details

NPI number1821882077
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedApril 4, 2025
Last updated in NPPESJune 26, 2026
Certification dateJune 26, 2026

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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