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Emergency Medicine

Jessica L. Sime, MD

Works at hospitals in Downers Grove, IL · Illinois

Summary

Dr. Jessica L. Sime, MD is an emergency medicine doctor at 3815 Highland Ave, Downers Grove, IL 60515. Phone: (630) 275-5900. Accepts Medicare assignment. In 2024, Jessica L. Sime had 61 Original Medicare patients and 71 services. NPI 1730345562. 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: 3815 Highland Ave, Downers Grove, IL 60515 · Directions
  • Phone: (630) 275‑5900
  • Medicare: Accepts Medicare assignment
  • Hospital: Advocate Good Samaritan Hospital
  • Group practice: Dupage Emergency Physicians Ltd
  • Medical school: Northwestern University Feinberg Medical School · graduated 2006 (20 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Jessica L. Sime, 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 Jessica L. Sime accept Medicare assignment?
Yes. Medicare's clinician data says Jessica L. Sime 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 Jessica L. Sime see?
In 2024, CMS data shows 61 Original Medicare patients and 71 services for Jessica L. Sime. This counts Original Medicare only and measures volume, not quality.
What is Jessica L. Sime's NPI number?
1730345562. 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 Jessica L. Sime, 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 patients61
Services billed to Medicare71
Different services or procedures9
Participating Medicare providerYes
Average age of these patients80

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)50 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%
  • Arthritis59%
  • Ischemic heart disease59%
  • Chronic kidney disease52%
  • Depression46%

Hospitals where Jessica L. Sime works

Medicare's Facility Affiliation Data lists Jessica L. Sime 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.

  • Advocate Good Samaritan HospitalDowners Grove, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140288

Practice locations

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

Group practices

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

  • Dupage Emergency Physicians Ltd26 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Illinois →

Other emergency medicine doctors in Downers Grove

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

All emergency medicine doctors in Downers Grove →

Other clinicians in Dupage Emergency Physicians Ltd

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

Clinician information

CredentialMD
Medical schoolNorthwestern University Feinberg Medical School
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1730345562
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