Quick answers
- Which hospitals does William J. Buckley work at?
- Medicare's official clinician data lists William J. Buckley at 4 hospitals: John T Mather Memorial Hospital of Port Jefferson, NYU Langone Hospitals, Peconic Bay Medical Center and Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William J. Buckley see patients?
- Medicare's clinician data lists 3 practice locations, including New York, NY, Mattituck, NY and Greenport, NY. Call before your visit to confirm the address.
- What is William J. Buckley's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does William J. Buckley accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Buckley 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 William J. Buckley?
- (212) 263-9700, as listed in official Medicare / NPI Registry data.
- What is William J. Buckley's NPI number?
- 1710155916. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William J. Buckley works
Medicare's Facility Affiliation Data lists William J. Buckley 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
- NYU Langone HospitalsNew York, NY · Acute Care Hospital · CCN 330214
- Peconic Bay Medical CenterRiverhead, NY · Acute Care Hospital · CCN 330107
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where William J. Buckley is enrolled with Medicare (CMS data updated 2026-10-02).
- 111 BroadwayNew York, NY 10006 (212) 263‑9700
- 11700 Main Rd, Suite 7Mattituck, NY 11952 (631) 963‑4770
- 201 Manor PlGreenport, NY 11944 (631) 477‑2701
Group practices
Medicare enrollment lists William J. Buckley as a member of this group (CMS data updated 2026-10-02).
- New York University6,134 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1710155916 |
| 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