Quick answers
- Which hospitals does Daniel H. Sajewski work at?
- Medicare's official clinician data lists Daniel H. Sajewski at 2 hospitals: Mercy Medical Center and St Francis Hospital - The Heart Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Daniel H. Sajewski see patients?
- Medicare's clinician data lists 4 practice locations, including Roslyn, NY, Rockville Center, NY and Greenvale, NY. Call before your visit to confirm the address.
- What is Daniel H. Sajewski's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Daniel H. Sajewski accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel H. Sajewski 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 Daniel H. Sajewski?
- (516) 627-6624, as listed in official Medicare / NPI Registry data.
- What is Daniel H. Sajewski's NPI number?
- 1669485041. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Daniel H. Sajewski works
Medicare's Facility Affiliation Data lists Daniel H. Sajewski at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Medical CenterRockville Centre, NY · Acute Care Hospital · CCN 330259
- St Francis Hospital - The Heart CenterRoslyn, NY · Acute Care Hospital · CCN 330182
Practice locations
Addresses where Daniel H. Sajewski is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Port Washington BlvdRoslyn, NY 11576
- 1000 N Village AveRockville Center, NY 11570 (516) 627‑6624
- 2200 Northern BlvdGreenvale, NY 11548 (516) 325‑7310
- 2200 Northern Blvd, Suite 100dGreenvale, NY 11548 (646) 293‑7500
Group practices
Medicare enrollment lists Daniel H. Sajewski as a member of these groups (CMS data updated 2026-10-02).
- CHS Physician Partners PC743 clinicians in the group
- New York Cardiovascular Anesthesiologists, P.C.134 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Roslyn
Clinicians with the same Medicare primary specialty in Roslyn, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669485041 |
| 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