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Internal Medicine

Melissa M. Arredondo, MD

Works at hospitals in Berwyn, IL · Illinois

Summary

Dr. Melissa M. Arredondo, MD is an internal medicine doctor at 3231 Euclid Ave, Suite 202, Berwyn, IL 60402. Phone: (708) 783-2700. Accepts Medicare assignment. In 2024, Melissa M. Arredondo had 87 Original Medicare patients and 209 services. NPI 1508120981. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 3231 Euclid Ave, Suite 202, Berwyn, IL 60402 · Directions
  • Phone: (708) 783‑2700
  • Medicare: Accepts Medicare assignment
  • Hospital: MacNeal Hospital
  • Group practice: Loyola Medical Group LLC
  • Medical school: University Of Chicago, Pritzker School Of Medicine · graduated 2012 (14 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Melissa M. Arredondo, 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 Melissa M. Arredondo accept Medicare assignment?
Yes. Medicare's clinician data says Melissa M. Arredondo 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 Melissa M. Arredondo see?
In 2024, CMS data shows 87 Original Medicare patients and 209 services for Melissa M. Arredondo. This counts Original Medicare only and measures volume, not quality.
What is Melissa M. Arredondo's NPI number?
1508120981. 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 Melissa M. Arredondo, 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 patients87
Services billed to Medicare209
Different services or procedures12
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)113 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)29 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)18 services
  4. Hospital discharge day management, 30 minutes or less (99238)16 services
  5. Hospital discharge day management, more than 30 minutes (99239)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%
  • Diabetes55%
  • Arthritis47%
  • Chronic kidney disease47%
  • Ischemic heart disease43%

Hospitals where Melissa M. Arredondo works

Medicare's Facility Affiliation Data lists Melissa M. Arredondo 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.

  • MacNeal HospitalBerwyn, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140054

Practice locations

Addresses where Melissa M. Arredondo is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Loyola Medical Group LLC127 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Berwyn

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

All internal medicine doctors in Berwyn →

Other clinicians in Loyola Medical Group LLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Chicago, Pritzker School Of Medicine
Graduation year2012 (14 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1508120981
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