Individual provider Active NPI

Christy Williams, MD

  • Emergency Medicine Physician
  • Lake Forest, IL
National Provider Identifier
1700406352
Registry record updated Apr 24, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
036170097 Issued in IL
Practice address
1000 N Westmoreland Rd
Lake Forest, IL 60045-1658
Phone
(847) 535-6150
Fax
(847) 535-7801
NPI assigned
Apr 23, 2020
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 24, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 01095329A IN
Emergency Medicine Physician 207P00000X 036170097 IL Primary

Addresses

Primary practice location

1000 N Westmoreland Rd
Lake Forest, IL 60045-1658

Mailing address

6730 S South Shore Dr Apt 1105
Chicago, IL 60649-1366
Phone (708) 256-3023

Other practice location 1

550 1st Ave
New York, NY 10016-6402
Phone (212) 263-5506

Other practice location 2

10855 Virginia St
Crown Point, IN 46307-0210
Phone (888) 824-0200

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL, IN2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20240724000440 IL Practitioner - Emergency Medicine 3072059237 Reassigns benefits to 2 organizations
I20250503000185 IN Practitioner - Emergency Medicine 3072059237 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
University of Illinois College of Med (CHI/Peor/Rock/CHM-Urb), 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians
University of ChicagoGroup PAC ID 7719899426, 1,674 clinicians

Practice addresses (Care Compare)

1000 N Westmoreland Rd
Lake Forest, IL 60045-1658
Phone (847) 234-5600

10855 Virginia St
Suite 1700
Crown Point, IN 46307-0210
Phone (888) 824-0200

Hospital & facility affiliations

  • Northwestern Lake Forest Hospital Hospital, Lake Forest, IL, CCN 140130
  • Uchicago Medicine Northwest Indiana Hospital, Crown Point, IN, CCN 150195

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
036170097ILMDEmergency Medicine Physician
01095329AINMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Methodist Medical Center of Illinois CurrentSince Oct 1, 2024 Accepting new patients
Methodist Medical Center of Illinois CurrentSince Oct 1, 2024 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Jul 1, 2024 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Jul 1, 2024 Accepting new patients
University of Chicago CurrentSince Apr 14, 2025 Accepting new patients

Locations

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

Dept 5777
Carol Stream, IL 60122

1000 N Westmoreland Rd
Lake Forest, IL 60045
Phone (847) 535-6150

660 N Westmoreland Rd
#302
Lake Forest, IL 60045

515 Valley View Dr
Ste 201
Moline, IL 61265
Phone (312) 695-0870

221 NE Glen Oak Ave
Peoria, IL 61636
Phone (309) 672-4281

10855 Virginia St
Ste 1700
Crown Point, IN 46307

1500 S Lake Park Ave
Ste 109
Hobart, IN 46342
Phone (219) 942-0551

Interoperability endpoints

  • Direct secure messaging: cwilliamsmd422952@carlehiedirect.net
  • Direct secure messaging: cwilliams341134@uchospital.direct-ci.com

Organizations & group practices 5

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 2

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": "1587600000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745452800000",
    "number": "1700406352",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6730 S SOUTH SHORE DR APT 1105",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606491366",
            "telephone_number": "708-256-3023"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 N WESTMORELAND RD",
            "city": "LAKE FOREST",
            "state": "IL",
            "postal_code": "600451658",
            "telephone_number": "847-535-6150",
            "fax_number": "847-535-7801"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "550 1st Ave",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100166402",
            "country_code": "US",
            "telephone_number": "212-263-5506",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10855 Virginia St",
            "address_purpose": "LOCATION",
            "city": "Crown Point",
            "state": "IN",
            "postal_code": "463070210",
            "country_code": "US",
            "telephone_number": "888-824-0200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "CHRISTY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-04-23",
        "last_updated": "2025-04-24",
        "certification_date": "2025-04-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IN",
            "license": "01095329A",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IL",
            "license": "036170097",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lake Forest, IL

Sources for this page

Verify at the official NPI Registry.