Quick answers
- Does Hollie A. Balazs accept Medicare assignment?
- Yes. Medicare's clinician data says Hollie A. Balazs 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 Hollie A. Balazs see?
- In 2024, CMS data shows 157 Original Medicare patients and 195 services for Hollie A. Balazs. This counts Original Medicare only and measures volume, not quality.
- What is Hollie A. Balazs's NPI number?
- 1659965804. 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 Hollie A. Balazs, 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 | 157 |
|---|---|
| Services billed to Medicare | 195 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Critical care, first 30-74 minutes (99291)68 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)25 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)24 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)23 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%
- Arthritis57%
- Ischemic heart disease52%
- Chronic kidney disease45%
- Heart failure45%
Hospitals where Hollie A. Balazs works
Medicare's Facility Affiliation Data lists Hollie A. Balazs 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.
- Edward HospitalNaperville, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140231
- Saint Francis Medical CenterPeoria, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140067
- UChicago Medicine AdventHealth BolingbrookBolingbrook, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140304
- UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140122
- UChicago Medicine AdventHealth La GrangeLa Grange, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140065
Practice locations
Addresses where Hollie A. Balazs is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 2205 Butterfield RdDowners Grove, IL 60515 (630) 527‑3645
- 2650 Ridge AveEvanston, IL 60201
- 2855 95th StNaperville, IL 60564 (630) 527‑3645
- 700 E Ogden Ave, Suite 202Westmont, IL 60559 (630) 789‑9785
- 755 N York StElmhurst, IL 60126 (331) 221‑2900
Group practices
Medicare enrollment lists Hollie A. Balazs as a member of these groups (CMS data updated October 2, 2026).
- Endeavor Health Medical Group3,350 clinicians in the group
- OSF Multi-Specialty Group2,114 clinicians in the group
- Suburban Pulmonary and Sleep Associates Ltd25 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Downers Grove
Clinicians with the same Medicare primary specialty in Downers Grove, IL — not a recommendation.
Other clinicians in Endeavor Health Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2019 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659965804 |
| 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