Quick answers
- Which hospitals does Jonathan M. Sarezky work at?
- Medicare's official clinician data lists Jonathan M. Sarezky at 2 hospitals: Mount Sinai South Nassau and North Shore University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan M. Sarezky see patients?
- Medicare's clinician data lists 2 practice locations, including Wantagh, NY and Mount Kisco, NY. Call before your visit to confirm the address.
- What is Jonathan M. Sarezky's specialty?
- Medicare lists Neurology as the primary specialty, and also Internal Medicine.
- Does Jonathan M. Sarezky accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan M. Sarezky 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.
- Does Jonathan M. Sarezky offer telehealth?
- Medicare's clinician data says Jonathan M. Sarezky offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Jonathan M. Sarezky?
- (516) 961-4545, as listed in official Medicare / NPI Registry data.
- What is Jonathan M. Sarezky's NPI number?
- 1013365816. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan M. Sarezky works
Medicare's Facility Affiliation Data lists Jonathan M. Sarezky at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai South NassauOceanside, NY · Acute Care Hospital · CCN 330198
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
Practice locations
Addresses where Jonathan M. Sarezky is enrolled with Medicare (CMS data updated 2026-10-02).
- 2020 Wantagh Ave, Mount Sinai Doctors WantaghWantagh, NY 11793 (516) 961‑4545
- 90 S Bedford RdMount Kisco, NY 10549 (914) 241‑1050
Group practices
Medicare enrollment lists Jonathan M. Sarezky as a member of these groups (CMS data updated 2026-10-02).
- Optum Medical Care PC1,010 clinicians in the group
- North Shore Medical Group of the Mount Sinai School of Medicine331 clinicians in the group
Specialties
- Neurologyprimary
- Internal Medicinealso
Other neurologists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1013365816 |
| 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