Quick answers
- Does Ajith R. Castelino accept Medicare assignment?
- Yes. Medicare's clinician data says Ajith R. Castelino 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 Ajith R. Castelino see?
- In 2024, CMS data shows 507 Original Medicare patients and 15,933 services for Ajith R. Castelino. This counts Original Medicare only and measures volume, not quality.
- What is Ajith R. Castelino's NPI number?
- 1760484042. 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 Ajith R. Castelino, 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 | 507 |
|---|---|
| Services billed to Medicare | 15,933 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)5,603 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)1,163 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,159 services
- Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)1,110 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)878 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%
- Arthritis75%
- Diabetes47%
- Depression43%
- Ischemic heart disease38%
Hospitals where Ajith R. Castelino works
Medicare's Facility Affiliation Data lists Ajith R. Castelino 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.
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
- Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114
Practice locations
Addresses where Ajith R. Castelino is enrolled with Medicare (CMS data updated October 2, 2026).
- 5555 N Sheridan Rd, Suite 24Chicago, IL 60640 (773) 944‑0484
- 6352 N Lincoln AveChicago, IL 60659 (872) 208‑3095
Group practices
Medicare enrollment lists Ajith R. Castelino as a member of this group (CMS data updated October 2, 2026).
- Noel Castelino SC4 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in Illinois →
Other rehabilitation doctors in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Other clinicians in Noel Castelino SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1760484042 |
| 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