DR. AYAH ZEGAR M.D.
NPI 1487115523
Anesthesiology - Pain Medicine in Evanston, IL

Q: What is Ayah Zegar's NPI number?

The NPI number for Ayah Zegar is 1487115523. It was assigned to this individual provider in the NPPES registry on March 30, 2019.

Q: What is Ayah Zegar's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Q: When was this NPI record last updated?

The NPPES record for Ayah Zegar was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since March 30, 2019PECOS EnrolledAccepts Medicare Assignment

2650 RIDGE AVE., DEPARTMENT OF ANESTHESIA, EVANSTON, IL 60201(847) 570-2760(847) 570-2921 Get Directions Write a Review

NPPES record last updated: April 30, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 30, 2026, Jul 18, 2024, May 23, 2023 (3 updates tracked since 2023).

On this page

About Dr. Ayah Zegar M.d. NPPES

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

DR. AYAH ZEGAR M.D. (NPI 1487115523) is an individual pain medicine provider in Evanston, Illinois, licensed in Illinois (036164124) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Northeastern Ohio University College Of Medicine (2019).

NPPES Registry Identity

NPI1487115523

Entity TypeIndividualFemale

Primary Taxonomy207LP2900X

Provider Legal NameDR. AYAH ZEGARCredential: M.D.

Location Address2650 RIDGE AVE., DEPARTMENT OF ANESTHESIAEvanston, IL 60201-1718

Mailing Address2650 Ridge Ave., Department Of AnesthesiaEvanston, IL 60201 · (847) 570-2760 · Fax (847) 570-2921

Phone(847) 570-2760

Fax(847) 570-2921

Sole ProprietorYes

Medical School CMSNortheastern Ohio University College Of MedicineGraduated 2019

Enumeration DateMarch 30, 2019

Last NPPES UpdateApril 30, 20263 updates tracked since enumeration

NPPES CertifiedApril 30, 2026

✔ NPI 1487115523 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

License✔ Licensed in IL · 036164124

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Also ListedAnesthesiologyTaxonomy 207L00000X · License 036164124 (IL)

2650 RIDGE AVE., Evanston, IL 60201

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

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

Dr. Ayah Zegar M.d. 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 ID2264775667

PECOS Enrollment IDI20240724003152

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 Reassignment

Medicare enrollment records show Ayah Zegar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Endeavor Health Medical Group

Same address

Anesthesiology

2650 RIDGE AVE, ANESTHESIOLOGY ROOM 3905
Evanston, IL 60201

Reassigned Medicare billing, Illinois enrollment
4,841 clinicians in this Medicare group

NPI 1265695944 (847) 570-2760

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 procedure for total knee joint replacement 01402

Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.

21 services21 patients

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447

This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.

17 services17 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.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Swedish Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140114

Location5145 N California AveChicago, IL 60625 · Cook 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.

JAMES FRANCIS KELLY DO

Hospitalist

2650 RIDGE AVE., IM HOSPITALISTS STE 4206
EVANSTON, IL 60201

Cook County (847) 570-1010

DR. MARY TILLEY JENKINS VOGEL MD

Obstetrics & Gynecology (Gynecologic Oncology)

2650 RIDGE AVE., KELLOGG CANCER CENTER
EVANSTON, IL 60201

Cook County (847) 570-2639

SUNITHA CHITRA SURESH MD

Obstetrics & Gynecology (Maternal & Fetal Medicine)

2650 RIDGE AVE., SUITE 1420
EVANSTON, IL 60201

Cook County (847) 570-2860

BHAVIK KHAJURIA

Radiology (Diagnostic Radiology)

2650 RIDGE AVE., DEPT. OF RADIOLOGY
EVANSTON, IL 60201

Cook County (847) 570-2477

WAJDEY NESHEIWAT PA-C

Physician Assistant (Surgical)

2650 RIDGE AVE., DEPT. OF SURGERY WALGREEN 2507
EVANSTON, IL 60201

Cook County (847) 570-2560

AYMAN NAJIB MD

Hospitalist

2650 RIDGE AVE., IM HOSPITALISTS STE 4206
EVANSTON, IL 60201

Cook County (847) 570-1010

MATTHEW JOSEPH SADLOWSKY APN-CRNA

Nurse Anesthetist, Certified Registered

2650 RIDGE AVE., DEPARTMENT OF ANESTHESIA
EVANSTON, IL 60201

Cook County (847) 570-2760

KYLE PETTY MD

Anesthesiology

2650 RIDGE AVE., DEPT. OF ANESTHESIA
EVANSTON, IL 60201

Cook County (847) 570-2760

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 Ayah Zegar's NPI number?

The NPI number for Ayah Zegar is 1487115523. It was assigned to this individual provider in the NPPES registry on March 30, 2019.

Where is Ayah Zegar located?

Ayah Zegar practices at 2650 Ridge Ave. Department Of Anesthesia, Evanston, IL 60201. The listed phone number is (847) 570-2760.

What is Ayah Zegar's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Ayah Zegar enrolled in Medicare?

Yes. Ayah Zegar 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 organization bills Medicare for Ayah Zegar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ayah Zegar reassigns Medicare benefits to Endeavor Health Medical Group (Evanston, IL). The 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 Ayah Zegar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ayah Zegar accept?

Health plans from Oscar Health list Ayah Zegar as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Ayah Zegar affiliated with any hospitals?

According to CMS data, Ayah Zegar is affiliated with Northshore University Healthsystem - Evanston Hospital and Swedish Hospital.

When was this NPI record last updated?

The NPPES record for Ayah Zegar was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.