Quick answers
- Which hospitals does Donna Marchant work at?
- Medicare's official clinician data lists Donna Marchant at 5 hospitals: John T Mather Memorial Hospital of Port Jefferson, Long Island Jewish Medical Center, North Shore University Hospital, Northwell Hospital Glen Cove and St John's Episcopal Hospital at South Shore. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Donna Marchant see patients?
- Medicare's clinician data lists 8 practice locations, including Forest Hills, NY, New Hyde Park, NY and Whitestone, NY. Call before your visit to confirm the address.
- What is Donna Marchant's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Interventional Cardiology.
- Does Donna Marchant accept Medicare assignment?
- Yes. Medicare's clinician data says Donna Marchant 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.
- Does Donna Marchant offer telehealth?
- Medicare's clinician data says Donna Marchant offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Donna Marchant?
- (718) 830-4000, as listed in official Medicare / NPI Registry data.
- What is Donna Marchant's NPI number?
- 1275603318. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Donna Marchant works
Medicare's Facility Affiliation Data lists Donna Marchant 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
- Long Island Jewish Medical CenterNew Hyde Park, NY · Acute Care Hospital · CCN 330195
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
- Northwell Hospital Glen CoveGlen Cove, NY · Acute Care Hospital · CCN 330181
- St John's Episcopal Hospital at South ShoreFar Rockaway, NY · Acute Care Hospital · CCN 330395
Practice locations
Addresses where Donna Marchant is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 10201 66th RdForest Hills, NY 11375 (718) 830‑4000
- 1111 Marcus AveNew Hyde Park, NY 11042
- 150 -55Whitestone, NY 11357 (718) 559‑3300
- 15055 14th AveWhitestone, NY 11357 (718) 559‑3300
- 300 Community DrManhasset, NY 11030
Group practices
Medicare enrollment lists Donna Marchant as a member of this group (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Forest Hills
Clinicians with the same Medicare primary specialty in Forest Hills, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1275603318 |
| 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