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Emergency Medicine

Joanna M. Marino, DO

Works at hospitals in Chicago, IL · Illinois

Summary

Dr. Joanna M. Marino, DO is an emergency medicine doctor at 5645 W Addison St, Chicago, IL 60634. Phone: (773) 282-7000. Accepts Medicare assignment. In 2024, Joanna M. Marino had 112 Original Medicare patients and 178 services. NPI 1972943850. 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: 5645 W Addison St, Chicago, IL 60634 · Directions
  • Phone: (773) 282‑7000
  • Medicare: Accepts Medicare assignment
  • Hospital: Community First Medical Center
  • Group practice: Community First Healthcare of Illinois Inc
  • Medical school: graduated 2013 (13 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Joanna M. Marino, 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 Joanna M. Marino accept Medicare assignment?
Yes. Medicare's clinician data says Joanna M. Marino 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 Joanna M. Marino see?
In 2024, CMS data shows 112 Original Medicare patients and 178 services for Joanna M. Marino. This counts Original Medicare only and measures volume, not quality.
What is Joanna M. Marino's NPI number?
1972943850. 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 Joanna M. Marino, 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 patients112
Services billed to Medicare178
Different services or procedures11
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)80 services
  2. Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)50 services
  3. Emergency department visit with moderate level of medical decision making (99284)15 services
  4. Critical care, first 30-74 minutes (99291)13 services
  5. Emergency department visit with low level of medical decision making (99283)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%
  • Arthritis61%
  • Diabetes58%
  • Ischemic heart disease50%
  • Heart failure46%

Hospitals where Joanna M. Marino works

Medicare's Facility Affiliation Data lists Joanna M. Marino 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 Joanna M. Marino is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Joanna M. Marino as a member of this group (CMS data updated October 2, 2026).

  • Community First Healthcare of Illinois Inc45 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Illinois →

Other emergency medicine doctors in Chicago

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

All emergency medicine doctors in Chicago →

Other clinicians in Community First Healthcare of Illinois Inc

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

Clinician information

CredentialDO
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1972943850
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