Individual provider Active NPI

Timothy Alan Williams Jr., MD

  • Hospitalist Physician
  • Chicago, IL
National Provider Identifier
1124645700
Registry record updated Jan 23, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
036163881 Issued in IL
Practice address
1625 E 75TH St FL 1
Chicago, IL 60649-3603
Phone
(773) 947-7310
NPI assigned
Jun 30, 2020
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 23, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 125.077201 IL
Hospitalist Physician 208M00000X 036163881 IL Primary

Addresses

Primary practice location

1625 E 75TH St FL 1
Chicago, IL 60649-3603

Mailing address

7531 S Stony Island Ave
Chicago, IL 60649-3954
Phone (773) 947-7500

Other practice location 1

5841 S Maryland Ave
Chicago, IL 60637-1443
Phone (888) 824-0200

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20230804001182 IL Practitioner - HospitalistPractitioner - Family Practice 8224499348 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Family Practice
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University of ChicagoGroup PAC ID 7719899426, 1,674 clinicians

Practice addresses (Care Compare)

5841 S Maryland Ave
Chicago, IL 60637-1443
Phone (888) 824-0200

Hospital & facility affiliations

  • Ingalls Memorial Hospital Hospital, Harvey, IL, CCN 140191

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
125.077201ILMDFamily Medicine Physician
036163881ILMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Chicago CurrentSince Dec 24, 2024 Accepting new patients
The University of Chicago Medical Center CurrentSince Dec 24, 2024 Accepting new patients
The University of Chicago Medical Center CurrentSince Dec 24, 2024 Accepting new patients
Jackson Park Hospital PastSince Jul 5, 2020 Accepting new patients

Locations

800 W Central Rd
Arlington Hts, IL 60005
Phone (847) 618-6150

150 Harvester Dr
Ste 300
Burr Ridge, IL 60527
Phone (773) 702-1061

2650 Ridge Ave
Evanston, IL 60201
Phone (847) 570-1206

2800 W 95th St
Evergreen Pk, IL 60805
Phone (708) 229-5104

1 Ingalls Dr
Harvey, IL 60426
Phone (708) 333-2300

350 N Wall St
Kankakee, IL 60901
Phone (815) 935-7500

120 N Oak St
Oak Brook Mall, IL 60521
Phone (630) 856-6700

Interoperability endpoints

  • Direct secure messaging: twilliams259303@uchospital.direct-ci.com

Organizations & group practices 4

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.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1593475200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1737590400000",
    "number": "1124645700",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7531 S STONY ISLAND AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606493954",
            "telephone_number": "773-947-7500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1625 E 75TH ST FL 1",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606493603",
            "telephone_number": "773-947-7310"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5841 S Maryland Ave",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606371443",
            "country_code": "US",
            "telephone_number": "888-824-0200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "TIMOTHY",
        "middle_name": "ALAN",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-06-30",
        "last_updated": "2025-01-23",
        "certification_date": "2025-01-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "125.077201",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "IL",
            "license": "036163881",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.