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

Emergency Medicine

Arnold S. Cruz, DO

Works at hospitals in Lake Forest, IL · Chicago, IL · Illinois

Summary

Dr. Arnold S. Cruz, DO is an emergency medicine doctor at 1 Ingalls Dr, Harvey, IL 60426. Phone: (708) 333-2300. Accepts Medicare assignment. In 2024, Arnold S. Cruz had 753 Original Medicare patients and 2,410 services. NPI 1487682514. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 1 Ingalls Dr, Harvey, IL 60426 · Directions (8 more locations)
  • Phone: (708) 333‑2300
  • Medicare: Accepts Medicare assignment
  • Hospitals: Northwestern Lake Forest Hospital, Northwestern Memorial Hospital
  • Group practice: Allina Health System (+5 more)
  • Medical school: Chicago College Of Medicine And Surgery · graduated 1998 (28 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Arnold S. Cruz, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Arnold S. Cruz accept Medicare assignment?
Yes. Medicare's clinician data says Arnold S. Cruz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Arnold S. Cruz see?
In 2024, CMS data shows 753 Original Medicare patients and 2,410 services for Arnold S. Cruz. This counts Original Medicare only and measures volume, not quality.
What is Arnold S. Cruz's NPI number?
1487682514. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Arnold S. Cruz, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients753
Services billed to Medicare2,410
Different services or procedures83
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)274 services
  2. Insertion of needle into vein for collection of blood sample (36415)251 services
  3. X-ray of chest, 2 views (71046)112 services
  4. Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen (87635)97 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)78 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure68%
  • Arthritis53%
  • Ischemic heart disease28%
  • Diabetes27%
  • Anxiety25%

Hospitals where Arnold S. Cruz works

Medicare's Facility Affiliation Data lists Arnold S. Cruz at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Arnold S. Cruz is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.

Group practices

Medicare enrollment lists Arnold S. Cruz as a member of these groups (CMS data updated October 2, 2026).

  • Allina Health System3,842 clinicians in the group
  • Ochsner Clinic LLC2,864 clinicians in the group
  • WellSpan Medical Group2,480 clinicians in the group
  • Orlando Health Medical Group Inc2,287 clinicians in the group
  • CentraCare Clinic791 clinicians in the group
  • SVMHS Clinics259 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Illinois →

Other emergency medicine doctors in Harvey

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

All emergency medicine doctors in Harvey →

Other clinicians in Allina Health System

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolChicago College Of Medicine And Surgery
Graduation year1998 (28 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1487682514
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians