Quick answers
- Which hospitals does Steven A. Kroop work at?
- Medicare's official clinician data lists Steven A. Kroop at 5 hospitals: Hudson Valley Hospital Center, Lenox Hill Hospital, Northern Westchester Hospital, Phelps Hospital and Plainview Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven A. Kroop see patients?
- Medicare's clinician data lists 4 practice locations, including Manhasset, NY, Valhalla, NY and Chappaqua, NY. Call before your visit to confirm the address.
- What is Steven A. Kroop's specialty?
- Medicare lists Nuclear Medicine as the primary specialty, and also Diagnostic Radiology.
- Does Steven A. Kroop accept Medicare assignment?
- Yes. Medicare's clinician data says Steven A. Kroop 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 Steven A. Kroop?
- (516) 562-3058, as listed in official Medicare / NPI Registry data.
- What is Steven A. Kroop's NPI number?
- 1043257108. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven A. Kroop works
Medicare's Facility Affiliation Data lists Steven A. Kroop at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hudson Valley Hospital CenterCortlandt Manor, NY · Acute Care Hospital · CCN 330267
- Lenox Hill HospitalNew York, NY · Acute Care Hospital · CCN 330119
- Northern Westchester HospitalMount Kisco, NY · Acute Care Hospital · CCN 330162
- Phelps HospitalSleepy Hollow, NY · Acute Care Hospital · CCN 330261
- Plainview HospitalPlainview, NY · Acute Care Hospital · CCN 330331
Practice locations
Addresses where Steven A. Kroop is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Community DrManhasset, NY 11030 (516) 562‑3058
- 465 Columbus AveValhalla, NY 10595
- 480 Bedford RdChappaqua, NY 10514 (914) 232‑3255
- 91 Smith AveMount Kisco, NY 10549 (914) 241‑9030
Group practices
Medicare enrollment lists Steven A. Kroop as a member of these groups (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
- Westchester Health Medical PC88 clinicians in the group
Specialties
- Nuclear Medicineprimary
- Diagnostic Radiologyalso
Other nuclear medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043257108 |
| 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