Quick answers
- Does Arun Nagaraju accept Medicare assignment?
- Yes. Medicare's clinician data says Arun Nagaraju 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 Arun Nagaraju see?
- In 2024, CMS data shows 6,860 Original Medicare patients and 13,704 services for Arun Nagaraju. This counts Original Medicare only and measures volume, not quality.
- What is Arun Nagaraju's NPI number?
- 1861805871. 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 Arun Nagaraju, 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 | 6,860 |
|---|---|
| Services billed to Medicare | 13,704 |
| Different services or procedures | 136 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Screening mammography (77067)5,173 services
- Screening 3d breast mammography (77063)5,127 services
- X-ray of chest, 1 view (71045)491 services
- Dxa bone density measurement of hip, pelvis, spine (77080)352 services
- Ct scan head or brain without contrast (70450)243 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 cholesterol75%
- High blood pressure70%
- Arthritis45%
- Diabetes29%
- Anxiety24%
- Osteoporosis24%
Hospitals where Arun Nagaraju works
Medicare's Facility Affiliation Data lists Arun Nagaraju 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 Elizabeth MDL CenterPeru, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140110
- OSF Saint Paul Medical CenterMendota, IL · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 141310
- Saint James HospitalPontiac, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 140161
- Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114
Practice locations
Addresses where Arun Nagaraju is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 26; the Medicare profile lists all.
- 1000 W Harlem AveMonmouth, IL 61462
- 1051 W S StKewanee, IL 61443 (309) 852‑7500
- 1100 E Norris DrOttawa, IL 61350 (815) 433‑3100
- 1401 E 12th StMendota, IL 61342 (815) 539‑7461
- 1614 E Norris DrOttawa, IL 61350 (815) 431‑3274
Group practices
Medicare enrollment lists Arun Nagaraju 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
- Central Illinois Radiological Associates Ltd209 clinicians in the group
- Diagnostic Radiology Specialists, S.C.9 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Monmouth
Clinicians with the same Medicare primary specialty in Monmouth, 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
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861805871 |
| 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