Quick answers
- Does Margaret M. Hannon accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret M. Hannon 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 Margaret M. Hannon see?
- In 2024, CMS data shows 352 Original Medicare patients and 3,010 services for Margaret M. Hannon. This counts Original Medicare only and measures volume, not quality.
- What is Margaret M. Hannon's NPI number?
- 1336156751. 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 Margaret M. Hannon, 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 | 352 |
|---|---|
| Services billed to Medicare | 3,010 |
| Different services or procedures | 102 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)389 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)269 services
- Blood test, comprehensive group of blood chemicals (80053)237 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)232 services
- Blood test, lipids (cholesterol and triglycerides) (80061)223 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 cholesterol73%
- High blood pressure67%
- Arthritis39%
- Diabetes19%
- Chronic kidney disease19%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)19%
Hospitals where Margaret M. Hannon works
Medicare's Facility Affiliation Data lists Margaret M. Hannon 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.
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140276
- 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 Margaret M. Hannon is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1325 N Meacham RdSchaumburg, IL 60173 (630) 469‑9200
- 17495 La Grange RdTinley Park, IL 60487 (708) 226‑7000
- 2100 Glenwood AveJoliet, IL 60435 (815) 725‑2121
- 30 Stratford DrBloomingdale, IL 60108 (630) 893‑2210
- 40 S Clay StHinsdale, IL 60521
Group practices
Medicare enrollment lists Margaret M. Hannon as a member of this group (CMS data updated October 2, 2026).
- Dupage Medical Group Ltd1,322 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Schaumburg
Clinicians with the same Medicare primary specialty in Schaumburg, IL — not a recommendation.
Other clinicians in Dupage Medical Group Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | R Franklin University Of Med & Sci/chicago Medical School |
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1336156751 |
| 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