Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Critical Care (Intensivists)

John A. Shanley, MD

Works at hospitals in Arlington Heights, IL · Illinois

Summary

John A. Shanley, MD (Critical Care (Intensivists)) is listed by Medicare at 1 hospital in Arlington Heights, IL. NPI 1003955618. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about John A. Shanley, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Critical Care (Intensivists)Primary specialty
YesAccepts Medicare assignment
24Years since medical school (graduated 2002)
University Of Connecticut School Of MedicineMedical school
MaleGender (as listed)
Endeavor Health Medical GroupGroup practice (+1 more)

Quick answers

Which hospitals does John A. Shanley work at?
Medicare's official clinician data lists John A. Shanley at 1 hospital: Northwest Community Hospital 1. This is where the clinician works or has privileges; call the hospital to confirm.
Where does John A. Shanley see patients?
Medicare's clinician data lists 2 practice locations, including Evanston, IL and Arlington Heights, IL. Call before your visit to confirm the address.
What is John A. Shanley's specialty?
Medicare lists Critical Care (Intensivists) as the primary specialty, and also Emergency Medicine, Internal Medicine and Pulmonary Disease.
Does John A. Shanley accept Medicare assignment?
Yes. Medicare's clinician data says John A. Shanley accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for John A. Shanley?
(847) 618-1000, as listed in official Medicare / NPI Registry data.
What is John A. Shanley's NPI number?
1003955618. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John A. Shanley works

Medicare's Facility Affiliation Data lists John A. Shanley at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where John A. Shanley is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists John A. Shanley as a member of these groups (CMS data updated 2026-10-02).

  • Endeavor Health Medical Group3,350 clinicians in the group
  • Critical Care Physicians of Illinois LLC38 clinicians in the group

Specialties

Find other Critical Care (Intensivists) doctors in Illinois →

Other critical care doctors in Evanston

Clinicians with the same Medicare primary specialty in Evanston, IL — not a recommendation.

All critical care doctors in Evanston →

Clinician information

CredentialMD
Medical schoolUniversity Of Connecticut School Of Medicine
Graduation year2002
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003955618
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians