Quick answers
- Which hospitals does Lance Maresky work at?
- Medicare's official clinician data lists Lance Maresky at 2 hospitals: HCA Florida JFK Hospital and Mount Sinai West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lance Maresky see patients?
- Medicare's clinician data lists 4 practice locations, including New York, NY, West Palm Beach, FL and Atlantis, FL. Call before your visit to confirm the address.
- What is Lance Maresky's specialty?
- Medicare lists Hospitalist as the primary specialty.
- Does Lance Maresky accept Medicare assignment?
- Yes. Medicare's clinician data says Lance Maresky 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 Lance Maresky?
- (212) 523-6500, as listed in official Medicare / NPI Registry data.
- What is Lance Maresky's NPI number?
- 1033770375. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lance Maresky works
Medicare's Facility Affiliation Data lists Lance Maresky at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HCA Florida JFK HospitalAtlantis, FL · Acute Care Hospital · CCN 100080
- Mount Sinai WestNew York, NY · Acute Care Hospital · CCN 330046
Practice locations
Addresses where Lance Maresky is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 10th AveNew York, NY 10019 (212) 523‑6500
- 1111 Amsterdam AveNew York, NY 10025 (212) 523‑6500
- 2201 45th StWest Palm Beach, FL 33407 (561) 863‑3804
- 5301 S Congress AveAtlantis, FL 33462 (561) 548‑1953
Group practices
Medicare enrollment lists Lance Maresky as a member of these groups (CMS data updated 2026-10-02).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
- Hha Associates LLC132 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033770375 |
| 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