Individual provider Active NPI

Alexandria Williams, MD

  • Maternal & Fetal Medicine Physician
  • Evanston, IL
National Provider Identifier
1255724811
Registry record updated Jul 30, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Maternal & Fetal Medicine PhysicianTaxonomy code 207VM0101X
License
036176795 Issued in IL
Practice address
2650 Ridge Ave Ste 1420
Evanston, IL 60201-1700
Phone
(847) 570-2860
NPI assigned
Mar 6, 2015
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 30, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 036176795 IL
Maternal & Fetal Medicine Physician 207VM0101X 036176795 IL Primary

Addresses

Primary practice location

2650 Ridge Ave Ste 1420
Evanston, IL 60201-1700

Mailing address

2650 Ridge Ave Ste 1223
Evanston, IL 60201-1700
Phone (847) 570-2040

Other practice location 1

75 Francis St
Boston, MA 02115-6106
Phone (617) 732-5500

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA, IL2 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
I20220509000653 MA Practitioner - Obstetrics/Gynecology 7012394398 Reassigns benefits to 2 organizations
I20250710002502 IL Practitioner - Obstetrics/Gynecology 7012394398 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Endeavor Health Medical GroupGroup PAC ID 2163334699, 3,330 clinicians

Practice addresses (Care Compare)

1300 Oak Ave
Evanston, IL 60201-4205
Phone (847) 869-1300

2650 Ridge Ave
Evanston, IL 60201-1700

Hospital & facility affiliations

  • Northshore University Healthsystem - Evanston Hospital Hospital, Evanston, IL, CCN 140010

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Endeavor Health Medical Group CurrentSince Jul 2, 2025 Accepting new patients
Endeavor Health Medical Group Obstetrics & Gynecology Current Accepting new patients
Brigham & Womens Physicians Organization Inc Obstetrics & Gynecology CurrentSince Apr 25, 2022 Accepting new patients
Mass General Brigham Medical Group Suburban Massachusetts Inc CurrentSince Sep 2, 2023 Accepting new patients

Locations

800 W Central Rd
Ste 4024
Arlington Heights, IL 60005

9532 Eagle Way
Chicago, IL 60678

2650 Ridge Ave
Ste 1420
Evanston, IL 60201
Phone (847) 570-2860

2650 Ridge Ave
Ste 2218A
Evanston, IL 60201
Phone (847) 503-4222

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

2650 Ridge Ave
Ste 1223
Evanston, IL 60201
Phone (847) 982-3175

2650 Ridge Ave
#1223
Evanston, IL 60201
Phone (847) 982-3172

15 Tower Ct
Ste 300
Gurnee, IL 60031
Phone (847) 599-3600

757 Park Ave W
Ste 3870
Highland Park, IL 60035
Phone (847) 926-6544

75 Francis St
Boston, MA 02115

1153 Centre St
Jamaica Plain, MA 02130
Phone (617) 983-7000

254 2nd Ave
Ste 100
Needham Heights, MA 02494
Phone (781) 416-8412

2014 Washington St
Newtonville, MA 02462
Phone (617) 243-6000

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": "1425600000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785369600000",
    "number": "1255724811",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2650 RIDGE AVE STE 1223",
            "city": "EVANSTON",
            "state": "IL",
            "postal_code": "602011700",
            "telephone_number": "847-570-2040",
            "fax_number": "847-733-5315"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2650 RIDGE AVE STE 1420",
            "city": "EVANSTON",
            "state": "IL",
            "postal_code": "602011700",
            "telephone_number": "847-570-2860"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "75 Francis St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021156106",
            "country_code": "US",
            "telephone_number": "617-732-5500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "ALEXANDRIA",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2015-03-06",
        "last_updated": "2026-07-30",
        "certification_date": "2026-07-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "036176795",
            "primary": false
        },
        {
            "code": "207VM0101X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": "IL",
            "license": "036176795",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Evanston, IL

Sources for this page

Verify at the official NPI Registry.