Margaret Alice Williams, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

036.167635 Issued in IL

Practice address

5841 S. Maryland Ave.
M/C 2050
Chicago, IL 60637-1443

Phone

(773) 834-0742

NPI assigned

Mar 9, 2020

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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

Specialty

Obstetrics/Gynecology

Education

University of Alabama School of Medicine, 2021

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mwilliams277067@uchospital.direct-ci.com

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.

• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1033218128
  Medicare reassignment NPD
• University of Chicago

  • Multi-Specialty Clinic/Center
  • Chicago, IL
  • NPI 1821048786
  Medicare reassignment NPD
• The University of Chicago Medical Center

  • Community/Retail Pharmacy
  • Calumet City, IL
  • NPI 1255895678
  NPD

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

{
    "created_epoch": "1583712000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752537600000",
    "number": "1346875481",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "180 HARVESTER DR STE 110",
            "city": "BURR RIDGE",
            "state": "IL",
            "postal_code": "605276686",
            "telephone_number": "773-702-1150"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5841 S. MARYLAND AVE.",
            "address_2": "M/C 2050",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606371443",
            "telephone_number": "773-834-0742"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "MARGARET",
        "middle_name": "ALICE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-03-09",
        "last_updated": "2025-07-15",
        "certification_date": "2025-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "WI",
            "license": "81347-20",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "036.167635",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lydia Jay Williams, M.D.
• Makahail D Williams
• Marcus Williams, COTA/L
• Margaret Williams, CERTIFIED NURSE ASSI
• Margaret Williams
• Maria Renea Williams, APRN
• Marial Williams
• Marissa Williams
• Mark Williams
• Mary Williams

• Obstetrics & Gynecology Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Obstetrics & Gynecology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 15, 2025; 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.