Quick answers
- Which hospitals does Lewis Rappaport work at?
- Medicare's official clinician data lists Lewis Rappaport at 3 hospitals: Ns/Lij HS Huntington Hospital, St Catherine of Siena Hospital and St Francis Hospital - The Heart Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lewis Rappaport see patients?
- Medicare's clinician data lists 2 practice locations, including Smithtown, NY and Nesconset, NY. Call before your visit to confirm the address.
- What is Lewis Rappaport's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Nuclear Medicine.
- Does Lewis Rappaport accept Medicare assignment?
- Yes. Medicare's clinician data says Lewis Rappaport accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Lewis Rappaport?
- (631) 465-6225, as listed in official Medicare / NPI Registry data.
- What is Lewis Rappaport's NPI number?
- 1801861398. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lewis Rappaport works
Medicare's Facility Affiliation Data lists Lewis Rappaport at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ns/Lij HS Huntington HospitalHuntington, NY · Acute Care Hospital · CCN 330045
- St Catherine of Siena HospitalSmithtown, NY · Acute Care Hospital · CCN 330401
- St Francis Hospital - The Heart CenterRoslyn, NY · Acute Care Hospital · CCN 330182
Practice locations
Addresses where Lewis Rappaport is enrolled with Medicare (CMS data updated 2026-10-02).
- 50 Route 25aSmithtown, NY 11787 (631) 465‑6225
- 61 Southern BlvdNesconset, NY 11767 (631) 659‑1800
Group practices
Medicare enrollment lists Lewis Rappaport as a member of these groups (CMS data updated 2026-10-02).
- North Shore Medical Group of the Mount Sinai School of Medicine331 clinicians in the group
- Cardiac Ekg Interpretation, P. C.57 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801861398 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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