Quick answers
- Does Mario G. Massullo accept Medicare assignment?
- Yes. Medicare's clinician data says Mario G. Massullo 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 Mario G. Massullo see?
- In 2024, CMS data shows 1,181 Original Medicare patients and 5,881 services for Mario G. Massullo. This counts Original Medicare only and measures volume, not quality.
- What is Mario G. Massullo's NPI number?
- 1043228158. 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 Mario G. Massullo, 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 | 1,181 |
|---|---|
| Services billed to Medicare | 5,881 |
| Different services or procedures | 91 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,157 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)1,112 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)650 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)367 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)364 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%
- Ischemic heart disease54%
- Arthritis50%
- Chronic kidney disease42%
- Diabetes38%
Hospitals where Mario G. Massullo works
Medicare's Facility Affiliation Data lists Mario G. Massullo 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.
- Carle Foundation HospitalUrbana, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140091
- Iroquois Memorial HospitalWatseka, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141353
- Presence St Marys HospitalKankakee, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140155
- Riverside Medical CenterKankakee, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140186
Practice locations
Addresses where Mario G. Massullo is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 N River RdDes Plaines, IL 60016 (847) 297‑1800
- 100 Provena Way, Suite 103Bourbonnais, IL 60914 (815) 937‑8780
- 100 Provena Way, Suite CBourbonnais, IL 60914 (815) 937‑9370
- 500 W Court StKankakee, IL 60901 (815) 937‑2400
Group practices
Medicare enrollment lists Mario G. Massullo as a member of this group (CMS data updated October 2, 2026).
- Prime Healthcare Illinois Medical Group LLC322 clinicians in the group
Specialties
Other cardiac surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Prime Healthcare Illinois Medical Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio University, College Of Osteopathic Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043228158 |
| 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