Quick answers
- Which hospitals does Christopher B. McGuirk work at?
- Medicare's official clinician data lists Christopher B. McGuirk at 1 hospital: Mount Sinai South Nassau. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christopher B. McGuirk see patients?
- Medicare's clinician data lists 1 practice location in Oceanside, NY. Call before your visit to confirm the address.
- What is Christopher B. McGuirk's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Christopher B. McGuirk accept Medicare assignment?
- Medicare's clinician data says Christopher B. McGuirk may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Christopher B. McGuirk's NPI number?
- 1649912403. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christopher B. McGuirk works
Medicare's Facility Affiliation Data lists Christopher B. McGuirk 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
Practice locations
Addresses where Christopher B. McGuirk is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Healthy WayOceanside, NY 11572
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Oceanside
Clinicians with the same Medicare primary specialty in Oceanside, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of Ny Upstate Medical University |
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1649912403 |
| 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