Quick answers
- Which hospitals does Michael J. Maresca work at?
- Medicare's official clinician data lists Michael J. Maresca at 5 hospitals: Canton-Potsdam Hospital, Gouverneur Hospital, SLHS Massena, Inc, Vassar Brothers Medical Center and Westchester Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Maresca see patients?
- Medicare's clinician data lists 2 practice locations, including Astoria, NY and Smithtown, NY. Call before your visit to confirm the address.
- What is Michael J. Maresca's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Michael J. Maresca accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Maresca 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 Michael J. Maresca offer telehealth?
- Medicare's clinician data says Michael J. Maresca offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Michael J. Maresca?
- (631) 751-3000, as listed in official Medicare / NPI Registry data.
- What is Michael J. Maresca's NPI number?
- 1194893727. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Maresca works
Medicare's Facility Affiliation Data lists Michael J. Maresca at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Canton-Potsdam HospitalPotsdam, NY · Acute Care Hospital · CCN 330197
- Gouverneur HospitalGouverneur, NY · Critical Access Hospital · CCN 331315
- SLHS Massena, IncMassena, NY · Critical Access Hospital · CCN 331322
- Vassar Brothers Medical CenterPoughkeepsie, NY · Acute Care Hospital · CCN 330023
- Westchester Medical CenterValhalla, NY · Acute Care Hospital · CCN 330234
Practice locations
Addresses where Michael J. Maresca is enrolled with Medicare (CMS data updated 2026-10-02).
- 3016 30th DrAstoria, NY 11102 (631) 751‑3000
- 48 Route 25aSmithtown, NY 11787 (631) 751‑3000
Group practices
Medicare enrollment lists Michael J. Maresca as a member of this group (CMS data updated 2026-10-02).
- North Shore Hematology Oncology Associates PC479 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Astoria
Clinicians with the same Medicare primary specialty in Astoria, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1194893727 |
| 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