Quick answers
- Which hospitals does Marissa Lomonaco work at?
- Medicare's official clinician data lists Marissa Lomonaco at 2 hospitals: Good Samaritan Hospital Medical Center and Long Island Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marissa Lomonaco see patients?
- Medicare's clinician data lists 2 practice locations, including West Islip, NY and New York, NY. Call before your visit to confirm the address.
- What is Marissa Lomonaco's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Marissa Lomonaco accept Medicare assignment?
- Yes. Medicare's clinician data says Marissa Lomonaco 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 Marissa Lomonaco?
- (516) 705-2689, as listed in official Medicare / NPI Registry data.
- What is Marissa Lomonaco's NPI number?
- 1679138754. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marissa Lomonaco works
Medicare's Facility Affiliation Data lists Marissa Lomonaco at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · CCN 330286
- Long Island Community HospitalPatchogue, NY · Acute Care Hospital · CCN 330141
Practice locations
Addresses where Marissa Lomonaco is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Montauk HwyWest Islip, NY 11795 (516) 705‑2689
- 111 BroadwayNew York, NY 10006 (212) 263‑9700
Group practices
Medicare enrollment lists Marissa Lomonaco as a member of these groups (CMS data updated 2026-10-02).
- New York University6,134 clinicians in the group
- Samaritan Medical Services PC354 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in West Islip
Clinicians with the same Medicare primary specialty in West Islip, NY — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679138754 |
| 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