Quick answers
- Where does Mark J. Maguire see patients?
- Medicare's clinician data lists 1 practice location in Long Island City, NY. Call before your visit to confirm the address.
- What is Mark J. Maguire's specialty?
- Medicare lists Emergency Medicine as the primary specialty, and also Critical Care (Intensivists).
- Does Mark J. Maguire accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Maguire 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 Mark J. Maguire?
- (718) 808-7777, as listed in official Medicare / NPI Registry data.
- What is Mark J. Maguire's NPI number?
- 1629654363. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark J. Maguire is enrolled with Medicare (CMS data updated 2026-10-02).
- 2520 30th AveLong Island City, NY 11102 (718) 808‑7777
Group practices
Medicare enrollment lists Mark J. Maguire as a member of this group (CMS data updated 2026-10-02).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
Specialties
Other emergency medicine doctors in Long Island City
Clinicians with the same Medicare primary specialty in Long Island City, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Florida International Univ, College Of Medicine |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629654363 |
| 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
- 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