Quick answers
- Does Kathleen Stergiopoulos accept Medicare assignment?
- Yes. Medicare's clinician data says Kathleen Stergiopoulos 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 Kathleen Stergiopoulos see?
- In 2024, CMS data shows 1,620 Original Medicare patients and 4,446 services for Kathleen Stergiopoulos. This counts Original Medicare only and measures volume, not quality.
- What is Kathleen Stergiopoulos's NPI number?
- 1457465023. 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 Kathleen Stergiopoulos, 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 | 1,620 |
|---|---|
| Services billed to Medicare | 4,446 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)1,103 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)780 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)661 services
- Injection, perflutren lipid microspheres, per ml (Q9957)254 services
- Ultrasound of both sides of head and neck blood flow (93880)250 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%
- Ischemic heart disease71%
- Arthritis56%
- Atrial fibrillation43%
- Heart failure41%
Hospitals where Kathleen Stergiopoulos works
Medicare's Facility Affiliation Data lists Kathleen Stergiopoulos 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.
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330286
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330185
- St Catherine of Siena HospitalSmithtown, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330401
- St Francis Hospital - The Heart CenterRoslyn, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330182
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330393
Practice locations
Addresses where Kathleen Stergiopoulos is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Port Washington Blvd, Suite G01Roslyn, NY 11576 (516) 627‑2173
- 2200 Northern Blvd, Suite 112Greenvale, NY 11548 (516) 484‑6777
- 2200 Northern Blvd, Suite 118Greenvale, NY 11548 (516) 629‑2400
Group practices
Medicare enrollment lists Kathleen Stergiopoulos as a member of these groups (CMS data updated October 2, 2026).
- CHS Physician Partners PC743 clinicians in the group
- St Francis Cardiac Prevention Services PC62 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Roslyn
Clinicians with the same Medicare primary specialty in Roslyn, NY — not a recommendation.
Other clinicians in CHS Physician Partners PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457465023 |
| 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