Jamie M. Oleaga, MD

Medicare activity in 2024

Official CMS public-use data for Jamie M. Oleaga, 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)72 services
2. Insertion of needle into vein for collection of blood sample (36415)58 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)54 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)48 services
5. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)44 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 cholesterol75%
• High blood pressure73%
• Arthritis43%
• Ischemic heart disease33%
• Diabetes32%
• Chronic kidney disease30%

Hospitals where Jamie M. Oleaga works

Medicare's Facility Affiliation Data lists Jamie M. Oleaga 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.

• Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140200

Practice locations

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

• 100 Spalding Dr, Suite 208Naperville, IL 60540 (630) 717‑2600

Group practices

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

• Dupage Medical Group Ltd1,322 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Illinois →

Other gastroenterologists in Naperville

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

• Sushama Gundlapalli, MD
• Abhishek Bhandari, MD
• James Abraham, MD
• Sidharth Bhandari, DO
• Jacob V. Dibattista, MD
• William A. Mourad, MD
• Nikhil Seth, MD
• Alan H. Wang, MD

All gastroenterologists in Naperville →

Other clinicians in Dupage Medical Group Ltd

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

• Rachel Shah
• Sanah Shaikh, MD
• Carrie R. McInerney
• Lindsay R. Uthe
• Sigita K. Poskocimas, DO
• Mohammad H. Khan

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