Quick answers
- Does Marie Ann G. Korallus accept Medicare assignment?
- Medicare's clinician data says Marie Ann G. Korallus may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Marie Ann G. Korallus see?
- In 2024, CMS data shows 69 Original Medicare patients and 272 services for Marie Ann G. Korallus. This counts Original Medicare only and measures volume, not quality.
- What is Marie Ann G. Korallus's NPI number?
- 1669927893. 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 Marie Ann G. Korallus, 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 patients | 69 |
|---|---|
| Services billed to Medicare | 272 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)59 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)58 services
- Insertion of needle into vein for collection of blood sample (36415)52 services
- Telephone medical discussion with physician, 11-20 minutes (99442)23 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)15 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%
- Arthritis52%
- Ischemic heart disease23%
- Anxiety17%
Hospitals where Marie Ann G. Korallus works
Medicare's Facility Affiliation Data lists Marie Ann G. Korallus 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.
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
Practice locations
Addresses where Marie Ann G. Korallus is enrolled with Medicare (CMS data updated October 2, 2026).
- 6170 Joliet Rd, Suite 1Countryside, IL 60525 (708) 352‑0330
- 8770 W Bryn Mawr Ave, Suite 1300Chicago, IL 60631 (702) 258‑7997
Group practices
Medicare enrollment lists Marie Ann G. Korallus as a member of these groups (CMS data updated October 2, 2026).
- Integrity Medical and Wounds Group Il RLLP4 clinicians in the group
- R and W Medical LLC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Countryside
Clinicians with the same Medicare primary specialty in Countryside, IL — not a recommendation.
Clinician information
| Graduation year | 2018 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1669927893 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians