Irena L. Demario, DO

Medicare activity in 2024

Official CMS public-use data for Irena L. Demario, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)876 services
2. Hospital discharge day management, more than 30 minutes (99239)136 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)49 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)14 services
5. Advance care planning, first 30 minutes (99497)11 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 blood pressure75%
• High cholesterol75%
• Chronic kidney disease56%
• Diabetes55%
• Ischemic heart disease52%
• Arthritis51%

Hospitals where Irena L. Demario works

Medicare's Facility Affiliation Data lists Irena L. Demario 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.

• Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310076

Practice locations

Addresses where Irena L. Demario is enrolled with Medicare (CMS data updated October 2, 2026).

• 225 Williamson StElizabeth, NJ 07202 (908) 994‑5422
• 94 Old Short Hills RdLivingston, NJ 07039 (973) 322‑5000

Group practices

Medicare enrollment lists Irena L. Demario as a member of this group (CMS data updated October 2, 2026).

• RWJBH Emergency Medicine Associates, LLC848 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in New Jersey →

Other internal medicine doctors in Elizabeth

Clinicians with the same Medicare primary specialty in Elizabeth, NJ — not a recommendation.

• Raul I. Perez, MD
• Sara Ghotb, MD
• Siva Teja Jetty, MD
• Muhammad B. Mirza, DO
• Usha G. Thalody, MD
• Francisco Munoz, MD
• Ashraf Mansour, MD
• Sarah Hussain, MD

All internal medicine doctors in Elizabeth →

Other clinicians in RWJBH Emergency Medicine Associates, LLC

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

• Gina Pizzitola, MD
• Andrew J. Leingang, DO
• Katharine E. Judson-Yager, PA
• Nicole J. Maguire, DO
• Michael A. Castano, NP
• Sara Ghotb, MD

Clinician information

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