Quick answers
- Does Ramji R. Rajendran accept Medicare assignment?
- Yes. Medicare's clinician data says Ramji R. Rajendran 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 Ramji R. Rajendran see?
- In 2024, CMS data shows 297 Original Medicare patients and 1,703 services for Ramji R. Rajendran. This counts Original Medicare only and measures volume, not quality.
- What is Ramji R. Rajendran's NPI number?
- 1982760773. 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 Ramji R. Rajendran, 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 | 297 |
|---|---|
| Services billed to Medicare | 1,703 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)412 services
- Design and construction of complex radiation treatment device (77334)191 services
- Radiation treatment management, 5 treatment sessions (77427)169 services
- Calculation of radiation therapy dose (77300)157 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)146 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)73%
- Arthritis49%
- Ischemic heart disease40%
- Diabetes37%
Hospitals where Ramji R. Rajendran works
Medicare's Facility Affiliation Data lists Ramji R. Rajendran 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.
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140258
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140290
Practice locations
Addresses where Ramji R. Rajendran is enrolled with Medicare (CMS data updated October 2, 2026).
- 1555 Barrington Rd, Suite 1400Hoffman Estates, IL 60169 (847) 755‑8400
- 2225 Enterprise Dr, Suite 2511Westchester, IL 60154 (708) 486‑0076
- 2600 Patriot Blvd, JGlenview, IL 60026 (224) 260‑3100
- 800 Biesterfield Rd, Suite 110Elk Grove Village, IL 60007 (847) 981‑5760
Group practices
Medicare enrollment lists Ramji R. Rajendran as a member of these groups (CMS data updated October 2, 2026).
- Uropartners LLC138 clinicians in the group
- Radiation Oncology Consultants, Ltd19 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Hoffman Estates
Clinicians with the same Medicare primary specialty in Hoffman Estates, IL — not a recommendation.
Other clinicians in Uropartners LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982760773 |
| 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