Quick answers
- Does Shiranee T. Abeysekera accept Medicare assignment?
- Yes. Medicare's clinician data says Shiranee T. Abeysekera 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 Shiranee T. Abeysekera see?
- In 2024, CMS data shows 26 Original Medicare patients and 469 services for Shiranee T. Abeysekera. This counts Original Medicare only and measures volume, not quality.
- What is Shiranee T. Abeysekera's NPI number?
- 1427155480. 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 Shiranee T. Abeysekera, 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 | 26 |
|---|---|
| Services billed to Medicare | 469 |
| Different services or procedures | 3 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Psychotherapy with evaluation and management visit, 30 minutes (90833)232 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)232 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%
- Depression75%
- High blood pressure65%
- Arthritis46%
- Anxiety46%
Practice locations
Addresses where Shiranee T. Abeysekera is enrolled with Medicare (CMS data updated October 2, 2026).
- 3771 Nesconset Hwy, Suite 211bSouth Setauket, NY 11720 (631) 941‑1042
Specialties
- Psychiatryprimary
Other psychiatrists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Stony Brook, School Of Medicine |
| Graduation year | 1976 (50 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427155480 |
| 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
- 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