Quick answers
- Does Kathryn Mahoney accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn Mahoney 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 Kathryn Mahoney see?
- In 2024, CMS data shows 13 Original Medicare patients and 73 services for Kathryn Mahoney. This counts Original Medicare only and measures volume, not quality.
- What is Kathryn Mahoney's NPI number?
- 1083195580. 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 Kathryn Mahoney, 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 | 13 |
|---|---|
| Services billed to Medicare | 73 |
| Different services or procedures | 3 |
| Participating Medicare provider | Yes |
| Average age of these patients | 64 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)52 services
Hospitals where Kathryn Mahoney works
Medicare's Facility Affiliation Data lists Kathryn Mahoney 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.
- Rush University Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140119
Practice locations
Addresses where Kathryn Mahoney is enrolled with Medicare (CMS data updated October 2, 2026).
- 1520 W Harrison StChicago, IL 60607 (312) 942‑5904
- 1620 W Harrison StChicago, IL 60612
- 1653 W Congress PkwyChicago, IL 60612
- 1700 W Van Buren StChicago, IL 60612 (312) 563‑2875
Group practices
Medicare enrollment lists Kathryn Mahoney as a member of this group (CMS data updated October 2, 2026).
- Rush University Medical Group1,551 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Other clinicians in Rush University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083195580 |
| 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