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Endocrinology

Rebecca Jeun, MD

Works at hospitals in Louisville, KY · Kentucky

Summary

Dr. Rebecca Jeun, MD is an endocrinologist at 401 E Chestnut St, Suite 310, Louisville, KY 40202. Phone: (502) 584-8563. Accepts Medicare assignment. In 2024, Rebecca Jeun had 119 Original Medicare patients and 491 services. NPI 1114380599. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Rebecca Jeun, 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 Rebecca Jeun accept Medicare assignment?
Yes. Medicare's clinician data says Rebecca Jeun 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 Rebecca Jeun see?
In 2024, CMS data shows 119 Original Medicare patients and 491 services for Rebecca Jeun. This counts Original Medicare only and measures volume, not quality.
What is Rebecca Jeun's NPI number?
1114380599. 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 Rebecca Jeun, 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 patients119
Services billed to Medicare491
Different services or procedures18
Participating Medicare providerYes
Average age of these patients66

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)123 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)98 services
  3. Blood glucose (sugar) test performed by hand-held instrument (82962)83 services
  4. Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)46 services
  5. Hemoglobin a1c level (83036)40 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%
  • Diabetes75%
  • Arthritis54%
  • Chronic kidney disease53%
  • Ischemic heart disease52%

Hospitals where Rebecca Jeun works

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

Group practices

Medicare enrollment lists Rebecca Jeun as a member of this group (CMS data updated October 2, 2026).

  • University of Louisville Physicians Inc1,445 clinicians in the group

Specialties

Find other Endocrinology doctors in Kentucky →

Other endocrinologists in Louisville

Clinicians with the same Medicare primary specialty in Louisville, KY — not a recommendation.

All endocrinologists in Louisville →

Other clinicians in University of Louisville Physicians Inc

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

Clinician information

CredentialMD
Medical schoolBaylor College Of Medicine
Graduation year2016 (10 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1114380599
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