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MARGARET ALICE WILLIAMS MD
NPI 1346875481
Obstetrics & Gynecology in Chicago, IL

Active since March 09, 2020PECOS Enrolled
5841 S. MARYLAND AVE., M/C 2050, CHICAGO, IL 60637(773) 834-0742 Get Directions Write a Review

NPPES record last updated: July 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 18, 2023, Jun 17, 2021, Mar 9, 2020 (3 updates tracked since 2020).

About Margaret Alice Williams Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARGARET ALICE WILLIAMS MD (NPI 1346875481) is an individual obstetrics & gynecology provider in Chicago, Illinois, licensed in Illinois (036.167635) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of University Of Alabama School Of Medicine (2021).

NPPES Registry Identity

NPI1346875481
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMARGARET ALICE WILLIAMSCredential: MD
Location Address5841 S. MARYLAND AVE., M/C 2050Chicago, IL 60637-1443
Mailing Address180 Harvester Dr Ste 110Burr Ridge, IL 60527-6686 · (773) 702-1150
Phone(773) 834-0742
Sole ProprietorNo
Medical School CMSUniversity Of Alabama School Of MedicineGraduated 2021
Enumeration DateMarch 9, 2020
Last NPPES UpdateJuly 15, 20253 updates tracked since enumeration
NPPES CertifiedJuly 15, 2025
✔ NPI 1346875481 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in IL · 036.167635✔ Licensed in WI · 81347-20
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
5841 S. MARYLAND AVE., Chicago, IL 60637
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Alice Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID941602379
PECOS Enrollment IDI20250919000748
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60637 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MATTHEW BONOMO MD
Emergency Medicine
5841 S. MARYLAND AVE., M/C 5068
CHICAGO, IL 60637
Cook County (773) 702-9109
LINDSAY GUGERTY DO
Student in an Organized Health Care Education/Training Program
5841 S. MARYLAND AVE., MC 2050
CHICAGO, IL 60637
Cook County (773) 702-0840
ANJALI PATEL
Student in an Organized Health Care Education/Training Program
5841 S. MARYLAND AVE., MAILCODE 4028
CHICAGO, IL 60637
Cook County (773) 702-6842
HANI SHAYYA
Internal Medicine
5841 S. MARYLAND AVE., M/C 7082
CHICAGO, IL 60637
Cook County (773) 702-6840
PARAMESH VIDYANAND KARANDIKAR MD
Student in an Organized Health Care Education/Training Program
5841 S. MARYLAND AVE., M/C 2026
CHICAGO, IL 60637
Cook County (773) 702-9662
EMILY SYMES MD
Student in an Organized Health Care Education/Training Program
5841 S. MARYLAND AVE., M/C 3083
CHICAGO, IL 60637
Cook County (773) 834-7708
ALEXANDRA POLOVNEFF MD
Plastic Surgery
5841 S. MARYLAND AVE., PLASTIC SURGERY DEPARTMENT
CHICAGO, IL 60637
Cook County (888) 824-0200
MS. JODEL LYNN POWERS FNP-BC
Nurse Practitioner (Family)
5841 S. MARYLAND AVE., RM E-500, MC 5040
CHICAGO, IL 60637
Cook County (773) 702-3554

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Margaret Williams's NPI number?

The NPI number for Margaret Williams is 1346875481. It was assigned to this individual provider in the NPPES registry on March 9, 2020.

Where is Margaret Williams located?

Margaret Williams practices at 5841 S. Maryland Ave. M/C 2050, Chicago, IL 60637. The listed phone number is (773) 834-0742.

What is Margaret Williams's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Margaret Williams enrolled in Medicare?

Yes. Margaret Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Margaret Williams was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.