Quick answers
- Does Ratnasabapathy Sivasekaran accept Medicare assignment?
- Yes. Medicare's clinician data says Ratnasabapathy Sivasekaran 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 Ratnasabapathy Sivasekaran see?
- In 2024, CMS data shows 1,874 Original Medicare patients and 24,049 services for Ratnasabapathy Sivasekaran. This counts Original Medicare only and measures volume, not quality.
- What is Ratnasabapathy Sivasekaran's NPI number?
- 1114954476. 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 Ratnasabapathy Sivasekaran, 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 | 1,874 |
|---|---|
| Services billed to Medicare | 24,049 |
| Different services or procedures | 88 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)2,920 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)1,372 services
- Apolipoprotein level (82172)981 services
- Hospital discharge day management, more than 30 minutes (99239)962 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)886 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%
- Arthritis67%
- Ischemic heart disease56%
- Diabetes47%
- Chronic kidney disease43%
Hospitals where Ratnasabapathy Sivasekaran works
Medicare's Facility Affiliation Data lists Ratnasabapathy Sivasekaran 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.
- AdventHealth OcalaOcala, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100062
- Marion Communtiy HospitalOcala, FL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 100212
- The Villages Regional HospitalThe Villages, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100290
- UF Health Leesburg HospitalLeesburg, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100084
- UF Health Shands HospitalGainesville, FL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 100113
Practice locations
Addresses where Ratnasabapathy Sivasekaran is enrolled with Medicare (CMS data updated October 2, 2026).
- 2845 SE 3rd CtOcala, FL 34471 (352) 369‑5300
- 5036 SE 110th St, Suite 103Belleview, FL 34420 (352) 693‑3378
Group practices
Medicare enrollment lists Ratnasabapathy Sivasekaran as a member of these groups (CMS data updated October 2, 2026).
- Cora Health Services Inc1,136 clinicians in the group
- Hospitalists Group of Florida PLLC10 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Ocala
Clinicians with the same Medicare primary specialty in Ocala, FL — not a recommendation.
Other clinicians in Cora Health Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 (25 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) | 1114954476 |
| 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