Quick answers
- Which hospitals does Marylen Leon work at?
- Medicare's official clinician data lists Marylen Leon at 1 hospital: Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marylen Leon see patients?
- Medicare's clinician data lists 2 practice locations, including Smithtown, NY and Rego Park, NY. Call before your visit to confirm the address.
- What is Marylen Leon's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Marylen Leon accept Medicare assignment?
- Yes. Medicare's clinician data says Marylen Leon 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 Marylen Leon?
- (631) 604-4024, as listed in official Medicare / NPI Registry data.
- What is Marylen Leon's NPI number?
- 1053087619. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marylen Leon works
Medicare's Facility Affiliation Data lists Marylen Leon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where Marylen Leon is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Miller PlSmithtown, NY 11787 (631) 604‑4024
- 9881 Queens BlvdRego Park, NY 11374 (718) 502‑9798
Group practices
Medicare enrollment lists Marylen Leon as a member of this group (CMS data updated 2026-10-02).
- North Shore Lij Urgent Care PC390 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053087619 |
| 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