CHRISTOPHER MICHAEL KERWIN M.D.
NPI 1942470760
Emergency Medicine in Oak Lawn, IL

Q: What is Christopher Kerwin's NPI number?

The NPI number for Christopher Kerwin is 1942470760. It was assigned to this individual provider in the NPPES registry on March 7, 2008.

Q: What is Christopher Kerwin's specialty?

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

Active since March 07, 2008PECOS Enrolled

4440 W 95TH ST, OAK LAWN, IL 60453(708) 684-8000 Get Directions Write a Review

NPPES record last updated: April 7, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 7, 2025, May 25, 2022 (2 updates tracked since 2022).

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About Christopher Michael Kerwin M.d. NPPES

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

CHRISTOPHER MICHAEL KERWIN M.D. (NPI 1942470760) is an individual emergency medicine provider in Oak Lawn, Illinois, licensed in Illinois (036.119967) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1942470760

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameCHRISTOPHER MICHAEL KERWINCredential: M.D.

Location Address4440 W 95TH STOak Lawn, IL 60453-2600

Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900

Phone(708) 684-8000

Sole ProprietorYes

Enumeration DateMarch 7, 2008

Last NPPES UpdateApril 7, 20252 updates tracked since enumeration

NPPES CertifiedApril 7, 2025

✔ NPI 1942470760 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in IL · 036.119967

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.

4440 W 95TH ST, Oak Lawn, IL 60453

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Christopher Michael Kerwin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

Medicare enrollment records show Christopher Kerwin reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advocate Health & Hospitals Corporation

Same address

Medical Specialty

4440 W 95TH ST
Oak Lawn, IL 60453

Reassigned Medicare billing, Illinois enrollment
Medicare enrollment name: Advocate Health And Hospitals Corporation
4,870 clinicians in this Medicare group

NPI 1912936014 (847) 390-5900

Em Strategies,ltd.

18 mi

Emergency Medicine

1900 SILVER CROSS BLVD
New Lenox, IL 60451

Reassigned Medicare billing, Illinois enrollment
66 clinicians in this Medicare group

NPI 1679791834 (815) 300-1100

Rockford Health Physicians

75 mi

Multi-Specialty

8201 E RIVERSIDE BLVD
Rockford, IL 61114

Reassigned Medicare billing, Illinois enrollment
1,375 clinicians in this Medicare group

NPI 1043242886 (608) 314-2428

Carle West Physician Group Inc

107 mi

Family Medicine

1302 FRANKLIN AVE STE 3400
Normal, IL 61761

Reassigned Medicare billing, Illinois enrollment
698 clinicians in this Medicare group

NPI 1467074138 (309) 556-8295

Carle Health Medical Group

114 mi

Internal Medicine

611 W PARK ST
Urbana, IL 61801

Reassigned Medicare billing, Illinois enrollment
Medicare enrollment name: Carle Health Care Incorporated
2,516 clinicians in this Medicare group

NPI 1154653947 (217) 383-8300

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.

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.

146 services141 patients

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.

141 services140 patients

Emergency department visit with low level of medical decision making 99283

An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.

75 services74 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 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

$94.06 typical visit price

range $60.08 – $183.39

Typical copayment $23.51 (range $15.02 – $45.84)

Most-billed visit code 99203

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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.

DR. MARK ADRIAN FAASSE MD

Urology