Quick answers
- Which hospitals does Lawrence Y. Ong work at?
- Medicare's official clinician data lists Lawrence Y. Ong at 3 hospitals: North Shore University Hospital, Ns/Lij HS Huntington Hospital and Ns/Lij HS Southside Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lawrence Y. Ong see patients?
- Medicare's clinician data lists 9 practice locations, including Huntington, NY, Manhasset, NY and Bay Shore, NY. Call before your visit to confirm the address.
- What is Lawrence Y. Ong's specialty?
- Medicare lists Interventional Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Lawrence Y. Ong accept Medicare assignment?
- Yes. Medicare's clinician data says Lawrence Y. Ong 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 Lawrence Y. Ong?
- (631) 351-2356, as listed in official Medicare / NPI Registry data.
- What is Lawrence Y. Ong's NPI number?
- 1013077171. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lawrence Y. Ong works
Medicare's Facility Affiliation Data lists Lawrence Y. Ong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
- Ns/Lij HS Huntington HospitalHuntington, NY · Acute Care Hospital · CCN 330045
- Ns/Lij HS Southside HospitalBay Shore, NY · Acute Care Hospital · CCN 330043
Practice locations
Addresses where Lawrence Y. Ong is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 270 Park AveHuntington, NY 11743 (631) 351‑2356
- 270 Park Ave, Suite 1Huntington, NY 11743 (631) 351‑2219
- 300 Community DrManhasset, NY 11030
- 300 Community Dr LlManhasset, NY 11030 (516) 562‑2229
- 301 E Main StBay Shore, NY 11706
Group practices
Medicare enrollment lists Lawrence Y. Ong as a member of this group (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
Other interventional cardiologists in Huntington
Clinicians with the same Medicare primary specialty in Huntington, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013077171 |
| 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