Quick answers
- Which hospitals does Melissa Weiss work at?
- Medicare's official clinician data lists Melissa Weiss at 1 hospital: Mount Sinai South Nassau. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Melissa Weiss see patients?
- Medicare's clinician data lists 1 practice location in Oceanside, NY. Call before your visit to confirm the address.
- What is Melissa Weiss's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Melissa Weiss accept Medicare assignment?
- Yes. Medicare's clinician data says Melissa Weiss 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 Melissa Weiss?
- (516) 255-1600, as listed in official Medicare / NPI Registry data.
- What is Melissa Weiss's NPI number?
- 1972998862. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Melissa Weiss works
Medicare's Facility Affiliation Data lists Melissa Weiss at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai South NassauOceanside, NY · Acute Care Hospital · CCN 330198
Practice locations
Addresses where Melissa Weiss is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Healthy WayOceanside, NY 11572 (516) 255‑1600
Group practices
Medicare enrollment lists Melissa Weiss as a member of this group (CMS data updated 2026-10-02).
- South Nassau Communities Hospital18 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Oceanside
Clinicians with the same Medicare primary specialty in Oceanside, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972998862 |
| 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