Quick answers
- Where does Sean B. Halligan see patients?
- Medicare's clinician data lists 2 practice locations, including Astoria, NY and New York, NY. Call before your visit to confirm the address.
- What is Sean B. Halligan's specialty?
- Medicare lists Emergency Medicine as the primary specialty, and also General Surgery.
- Does Sean B. Halligan accept Medicare assignment?
- Yes. Medicare's clinician data says Sean B. Halligan 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 Sean B. Halligan?
- (718) 571-9192, as listed in official Medicare / NPI Registry data.
- What is Sean B. Halligan's NPI number?
- 1306804190. 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 Sean B. Halligan is enrolled with Medicare (CMS data updated 2026-10-02).
- 2248 31st StAstoria, NY 11105 (718) 571‑9192
- 2398 BroadwayNew York, NY 10024 (212) 721‑2111
Group practices
Medicare enrollment lists Sean B. Halligan as a member of this group (CMS data updated 2026-10-02).
- City Medical of Upper East Side PLLC658 clinicians in the group
Specialties
- Emergency Medicineprimary
- General Surgeryalso
Other emergency medicine doctors in Astoria
Clinicians with the same Medicare primary specialty in Astoria, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306804190 |
| 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