Quick answers
- Does Kanagaratnam Jegathesan accept Medicare assignment?
- Yes. Medicare's clinician data says Kanagaratnam Jegathesan 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 Kanagaratnam Jegathesan see?
- In 2024, CMS data shows 252 Original Medicare patients and 932 services for Kanagaratnam Jegathesan. This counts Original Medicare only and measures volume, not quality.
- What is Kanagaratnam Jegathesan's NPI number?
- 1497859409. 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 Kanagaratnam Jegathesan, 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 | 252 |
|---|---|
| Services billed to Medicare | 932 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)356 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)161 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)103 services
- Administration of influenza virus vaccine (G0008)79 services
- Influenza vaccine, inactivated (90653)71 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%
- Arthritis45%
- Diabetes32%
- Anxiety30%
- Ischemic heart disease25%
Hospitals where Kanagaratnam Jegathesan works
Medicare's Facility Affiliation Data lists Kanagaratnam Jegathesan 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.
- Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
- Saint Mary's HospitalWaterbury, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070016
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022
Practice locations
Addresses where Kanagaratnam Jegathesan is enrolled with Medicare (CMS data updated October 2, 2026).
- 3801 E Main St, Fl 2Waterbury, CT 06705 (203) 709‑4001
- 56 Franklin StWaterbury, CT 06706 (203) 709‑6000
Group practices
Medicare enrollment lists Kanagaratnam Jegathesan as a member of this group (CMS data updated October 2, 2026).
- Trinity Health of New England Provider Network Organization Inc653 clinicians in the group
Specialties
- Internal Medicineprimary
- Pulmonary Diseasealso
Other internal medicine doctors in Waterbury
Clinicians with the same Medicare primary specialty in Waterbury, CT — not a recommendation.
Other clinicians in Trinity Health of New England Provider Network Organization Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1962 (64 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497859409 |
| 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