Quick answers
- Does Fadi M. Mustapha accept Medicare assignment?
- Yes. Medicare's clinician data says Fadi M. Mustapha 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 Fadi M. Mustapha see?
- In 2024, CMS data shows 549 Original Medicare patients and 1,356 services for Fadi M. Mustapha. This counts Original Medicare only and measures volume, not quality.
- What is Fadi M. Mustapha's NPI number?
- 1508801986. 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 Fadi M. Mustapha, 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 | 549 |
|---|---|
| Services billed to Medicare | 1,356 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)230 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)181 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)147 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)139 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)97 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 cholesterol73%
- Arthritis42%
- Ischemic heart disease33%
- Diabetes30%
- Anxiety25%
Hospitals where Fadi M. Mustapha works
Medicare's Facility Affiliation Data lists Fadi M. Mustapha 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.
- OSF Saint Clare Medical CenterPrinceton, IL · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 141337
- OSF Saint Katharine Medical CenterDixon, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140012
Practice locations
Addresses where Fadi M. Mustapha is enrolled with Medicare (CMS data updated October 2, 2026).
- 215 E 1st St, Suite 212Dixon, IL 61021 (815) 227‑5600
Group practices
Medicare enrollment lists Fadi M. Mustapha as a member of this group (CMS data updated October 2, 2026).
- OSF Multi-Specialty Group2,114 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in OSF Multi-Specialty Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508801986 |
| 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