Quick answers
- Does Rajithia L. Premaratne accept Medicare assignment?
- Yes. Medicare's clinician data says Rajithia L. Premaratne 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 Rajithia L. Premaratne see?
- In 2024, CMS data shows 930 Original Medicare patients and 122,679 services for Rajithia L. Premaratne. This counts Original Medicare only and measures volume, not quality.
- What is Rajithia L. Premaratne's NPI number?
- 1497965594. 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 Rajithia L. Premaratne, 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 | 930 |
|---|---|
| Services billed to Medicare | 122,679 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, denosumab, 1 mg (J0897)33,420 services
- Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0717)28,800 services
- Injection, romosozumab-aqqg, 1 mg (J3111)19,320 services
- Injection, golimumab, 1 mg, for intravenous use (J1602)11,448 services
- Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0129)8,300 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 pressure72%
- Arthritis72%
- Osteoporosis67%
- Chronic kidney disease23%
- Diabetes22%
Hospitals where Rajithia L. Premaratne works
Medicare's Facility Affiliation Data lists Rajithia L. Premaratne 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.
- Havasu Regional Medical CenterLake Havasu City, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030069
- Kingman Regional Medical CenterKingman, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030055
- La Paz Regional HospitalParker, AZ · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 031317
- Valley View Medical CenterFort Mohave, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030117
Practice locations
Addresses where Rajithia L. Premaratne is enrolled with Medicare (CMS data updated October 2, 2026).
- 2005 Injo Dr, Suite 102Lake Havasu City, AZ 86403 (928) 680‑4255
Group practices
Medicare enrollment lists Rajithia L. Premaratne as a member of this group (CMS data updated October 2, 2026).
- Arizona Arthritis and Rheumatology Associates P C65 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Other clinicians in Arizona Arthritis and Rheumatology Associates P C
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 (24 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) | 1497965594 |
| 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