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PHILLIP WILLIAMS MD
NPI 1093939167
Anesthesiology in Arlington Heights, IL

Active since April 12, 2007PECOS EnrolledAccepts Medicare Assignment
1100 W CENTRAL RD, ARLINGTON HEIGHTS, IL 60005(847) 259-5408 Get Directions Write a Review

NPPES record last updated: February 1, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Phillip Williams Md NPPES

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

PHILLIP WILLIAMS MD (NPI 1093939167) is an individual anesthesiology provider in Arlington Heights, Illinois, licensed in Illinois (036079991) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains a secondary practice location in Mchenry.

NPPES Registry Identity

NPI1093939167
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NamePHILLIP WILLIAMSCredential: MD
Location Address1100 W CENTRAL RDArlington Heights, IL 60005-2402
Mailing Address925 Sherwood DrLake Bluff, IL 60044-2203
Phone(847) 259-5408
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 1987
Enumeration DateApril 12, 2007
Last NPPES UpdateFebruary 1, 2024
NPPES CertifiedFebruary 1, 2024
✔ NPI 1093939167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in IL · 036079991
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
1100 W CENTRAL RD, Arlington Heights, IL 60005
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Secondary Practice Location 1

Location 14201 W Medical Center DrMcHenry, IL 60050-8409 · Phone (815) 344-5000 · Fax (815) 344-3347

Other Identifiers 1

Medicaid036079991IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Phillip 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 ID3779626163
PECOS Enrollment IDI20100727000993
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Phillip Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwestern Medical Faculty Foundation
13 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866
Endeavor Health Medical Group
16 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
39 services37 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
29 services29 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
23 services23 patients

Hospital Affiliations CMS Care Compare

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

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140116
Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County
Emergency services Birthing friendly

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.

GREGORY NELSON
Ophthalmology
1100 W CENTRAL RD, SUITE 205
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 253-4040
DR. JAMES BENNETT WIESE D.D.S.
Dentist (General Practice)
1100 W CENTRAL RD, SUITE 406
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 398-8300
MRS. JANET ZEILER BRESCH MD
Ophthalmology
1100 W CENTRAL RD, SUITE 205
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 253-4040
STEFANIE C KADOLPH P.A.
Physician Assistant (Surgical)
1100 W CENTRAL RD, SUITE 200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 392-5440
DAVID BECKEMEIER MD
Anesthesiology
1100 W CENTRAL RD
ARLINGTON HEIGHTS, IL 60005
Cook County (800) 444-6110
RACHEL M PEREZ FRANCO M.D.
Anesthesiology
1100 W CENTRAL RD
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 259-3080
NORTHWEST SURGICARE LTD
Clinic/Center (Ambulatory Surgical)
1100 W CENTRAL RD, LOWER LEVEL BASEMENT, L4
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 259-3080
SUBURBAN ASSOCIATES IN OPHTHALMOLOGY LLC
Ophthalmology
1100 W CENTRAL RD, SUITE 205
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 253-4040

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 Phillip Williams's NPI number?

The NPI number for Phillip Williams is 1093939167. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Where is Phillip Williams located?

Phillip Williams practices at 1100 W Central Rd, Arlington Heights, IL 60005. The listed phone number is (847) 259-5408.

What is Phillip Williams's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Phillip Williams enrolled in Medicare?

Yes. Phillip 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.

Which organizations bill Medicare for Phillip Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Phillip Williams reassigns Medicare benefits to 2 organizations: Northwestern Medical Faculty Foundation (Carol Stream, IL) and Endeavor Health Medical Group (Evanston, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Phillip Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Phillip Williams affiliated with any hospitals?

According to CMS data, Phillip Williams is affiliated with Northwestern Medicine Mchenry.

When was this NPI record last updated?

The NPPES record for Phillip Williams was last updated on February 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.