Active NPI
Alexandria Williams, MD
- Maternal & Fetal Medicine Physician
- Evanston, IL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Maternal & Fetal Medicine Physician
- License
- 036176795
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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, IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
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
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
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Endeavor Health Medical Group | Current | Accepting new patients | |
| Endeavor Health Medical Group | Obstetrics & Gynecology | Current | Accepting new patients |
| Brigham & Womens Physicians Organization Inc | Obstetrics & Gynecology | Current | Accepting new patients |
| Mass General Brigham Medical Group Suburban Massachusetts Inc | Current | 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.
-
- Emergency Medicine Physician
- Evanston, IL
- NPI 1497701882
Obstetrics & Gynecology
-
- Internal Medicine Physician
- Boston, MA
- NPI 1033535497
Obstetrics & Gynecology
-
- Family Medicine Physician
- Newton, MA
- NPI 1538191218
-
- Anesthesiology Physician
- Evanston, IL
- NPI 1265695944
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Evanston, IL
- NPI 1184670549
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 30, 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.