Quick answers
- Which hospitals does Paul Mustacchia work at?
- Medicare's official clinician data lists Paul Mustacchia at 1 hospital: Nassau University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Paul Mustacchia see patients?
- Medicare's clinician data lists 1 practice location in East Meadow, NY. Call before your visit to confirm the address.
- What is Paul Mustacchia's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Paul Mustacchia accept Medicare assignment?
- Yes. Medicare's clinician data says Paul Mustacchia 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 Paul Mustacchia?
- (516) 486-6862, as listed in official Medicare / NPI Registry data.
- What is Paul Mustacchia's NPI number?
- 1285693820. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Paul Mustacchia works
Medicare's Facility Affiliation Data lists Paul Mustacchia at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Nassau University Medical CenterEast Meadow, NY · Acute Care Hospital · CCN 330027
Practice locations
Addresses where Paul Mustacchia is enrolled with Medicare (CMS data updated 2026-10-02).
- 2201 Hempstead TpkeEast Meadow, NY 11554 (516) 486‑6862
Group practices
Medicare enrollment lists Paul Mustacchia as a member of this group (CMS data updated 2026-10-02).
- Nassau Health Care Corporation178 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285693820 |
| 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