John Ludwig, LSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

149031732 Issued in IL

Practice address

4433 N Ravenswood Ave Ste 210
Chicago, IL 60640-7755

Phone

(773) 876-8763

Fax

(872) 315-3138

NPI assigned

Aug 22, 2024

Sex

Male

Sole proprietor

No

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

Not listed in the public Medicare enrollment file

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.

Specialty

Clinical Social Worker

Education

University of Illinois College of Med (CHI/Peor/Rock/CHM-Urb), 2024

Medicare assignment

May accept Medicare assignment

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.

• Catalyst Clinical Group, Inc

  • Clinical Social Worker
  • Chicago, IL
  • NPI 1316397979
  NPD

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

{
    "created_epoch": "1724284800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781740800000",
    "number": "1255164455",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4433 N RAVENSWOOD AVE STE 210",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606407755",
            "telephone_number": "773-876-8763",
            "fax_number": "872-315-3138"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4433 N RAVENSWOOD AVE STE 210",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606407755",
            "telephone_number": "773-876-8763",
            "fax_number": "872-315-3138"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LUDWIG",
        "first_name": "JOHN",
        "credential": "LSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-08-22",
        "last_updated": "2026-06-18",
        "certification_date": "2026-06-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "IL",
            "license": "149031732",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Julie Marie Ludwick, A.T.R.-B.C, L.C.P.C.
• Amy Chao Ludwig, MD
• Britni Elisabeth Ludwig, MA
• Catherine M. Ludwig
• Drew Ludwig, DO
• John Travis Ludwig, M.D.
• Kristina Elaine Ludwig, PHARM.D
• Naila Silva Ludwig, PT, DPT
• Patricia Dominika Ludwikowska
• Jessica Lue-Lai, M.D.

• 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 18, 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.