Lydia Leffelman, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

149022062 Issued in IL

Practice address

676 N Saint Clair St Ste 1100
Chicago, IL 60611-2954

Phone

(312) 695-5060

Fax

(312) 695-5010

NPI assigned

Apr 4, 2025

Sex

Female

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Loyola University of Chicago, Stritch School of Medicine, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Northwestern Medical Faculty Foundation

  dba Northwestern Medical Group

  • Multi-Specialty Clinic/Center
  • Carol Stream, IL
  • NPI 1346235314
  Medicare reassignment Care Compare group
• Advocate North Side Health Network

  dba Advocate Illinois Masonic Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1912014564
  Medicare reassignment NPD
• Advocate North Side Health Network

  dba Advocate Pharmacy #1510

  • Institutional Pharmacy
  • Chicago, IL
  • NPI 1114645470
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1743724800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782432000000",
    "number": "1821882077",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "676 N SAINT CLAIR ST STE 1100",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606112954",
            "telephone_number": "312-695-5060",
            "fax_number": "312-695-5010"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "676 N SAINT CLAIR ST STE 1100",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606112954",
            "telephone_number": "312-695-5060",
            "fax_number": "312-695-5010"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEFFELMAN",
        "first_name": "LYDIA",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-04-04",
        "last_updated": "2026-06-26",
        "certification_date": "2026-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "IL",
            "license": "149022062",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Thomas Lefebvre
• Maggie Lefever, PT
• Patrick Lefevre, MD
• Samuel Garland Lefew I
• Angela Lauren Leffelman, MD
• Lena M Leffew, RN, BSN
• Elaine Leflore-Jefferson, RN
• Briana Marie Leflorie, OTR/L
• Karen Lynne Lefort, PHARMD
• Legacy Connections

• Clinical Social Worker in Chicago, IL
• Providers in Chicago, IL by specialty
• Clinical Social Worker in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 26, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.