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DR. CHRISTY WILLIAMS MD
NPI 1700406352
Emergency Medicine in Lake Forest, IL

Active since April 23, 2020PECOS EnrolledAccepts Medicare Assignment
1000 N WESTMORELAND RD, LAKE FOREST, IL 60045(847) 535-6150(847) 535-7801 Get Directions Write a Review

NPPES record last updated: April 24, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 30, 2024, Apr 23, 2020 (2 updates tracked since 2020).

About Dr. Christy Williams Md NPPES

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

DR. CHRISTY WILLIAMS MD (NPI 1700406352) is an individual emergency medicine provider in Lake Forest, Illinois, licensed in Illinois (036170097) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, is affiliated with Northwestern Lake Forest Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1700406352
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. CHRISTY WILLIAMSCredential: MD
Location Address1000 N WESTMORELAND RDLake Forest, IL 60045-1658
Mailing Address6730 S South Shore Dr Apt 1105Chicago, IL 60649-1366 · (708) 256-3023
Phone(847) 535-6150
Fax(847) 535-7801
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2020
Enumeration DateApril 23, 2020
Last NPPES UpdateApril 24, 20252 updates tracked since enumeration
NPPES CertifiedApril 24, 2025
✔ NPI 1700406352 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in IL · 036170097✔ Licensed in IN · 01095329A
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1000 N WESTMORELAND RD, Lake Forest, IL 60045
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1550 1st AveNew York, NY 10016-6402 · Phone (212) 263-5506
Location 210855 Virginia StCrown Point, IN 46307-0210 · Phone (888) 824-0200

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Christy Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072059237
PECOS Enrollment IDI20240724000440, I20250503000185
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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
58 services58 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
22 services22 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140130
Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60045 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
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.

CONSOLIDATED PATHOLOGY CONSULTANTS SC
Pathology (Anatomic Pathology & Clinical Pathology)
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 996-1030
JENNIFER M NGUYEN MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
CAROLINE LANG OVERMAN PT, DPT
Physical Therapist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-6430
CASEY DUGAN PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 582-2134
MRS. TAYLOR MORGAN SARES PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-8500
DR. POOJA NAYAK MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
ANDREW MIN JUN CHOI MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
IRENE ZHU PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-7058

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 Christy Williams's NPI number?

The NPI number for Christy Williams is 1700406352. It was assigned to this individual provider in the NPPES registry on April 23, 2020.

Where is Christy Williams located?

Christy Williams practices at 1000 N Westmoreland Rd, Lake Forest, IL 60045. The listed phone number is (847) 535-6150.

What is Christy Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Christy Williams enrolled in Medicare?

Yes. Christy Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Christy Williams affiliated with any hospitals?

According to CMS data, Christy Williams is affiliated with Northwestern Lake Forest Hospital.

When was this NPI record last updated?

The NPPES record for Christy Williams was last updated on April 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.