Quick answers
- Which hospitals does Ayse M. Avcioglu work at?
- Medicare's official clinician data lists Ayse M. Avcioglu at 2 hospitals: John T Mather Memorial Hospital of Port Jefferson and St Catherine of Siena Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ayse M. Avcioglu see patients?
- Medicare's clinician data lists 2 practice locations, including Smithtown, NY and Port Jefferson, NY. Call before your visit to confirm the address.
- What is Ayse M. Avcioglu's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Ayse M. Avcioglu accept Medicare assignment?
- Yes. Medicare's clinician data says Ayse M. Avcioglu 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 Ayse M. Avcioglu?
- (240) 686-2300, as listed in official Medicare / NPI Registry data.
- What is Ayse M. Avcioglu's NPI number?
- 1811126642. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ayse M. Avcioglu works
Medicare's Facility Affiliation Data lists Ayse M. Avcioglu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY · Acute Care Hospital · CCN 330185
- St Catherine of Siena HospitalSmithtown, NY · Acute Care Hospital · CCN 330401
Practice locations
Addresses where Ayse M. Avcioglu is enrolled with Medicare (CMS data updated 2026-10-02).
- 50 Route 25aSmithtown, NY 11787 (240) 686‑2300
- 75 N Country RdPort Jefferson, NY 11777 (631) 473‑1320
Group practices
Medicare enrollment lists Ayse M. Avcioglu as a member of these groups (CMS data updated 2026-10-02).
- John T Mather Memorial Hospital175 clinicians in the group
- Siena Emergency Medical Services PC14 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811126642 |
| 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