Quick answers
- Which hospitals does Denis Lerner work at?
- Medicare's official clinician data lists Denis Lerner at 4 hospitals: Mercy Medical Center, New York Community Hospital of Brooklyn, Inc., South Brooklyn Health and Suny/Downstate University Hospital of Brooklyn. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Denis Lerner see patients?
- Medicare's clinician data lists 2 practice locations, including Rockville Center, NY and Brooklyn, NY. Call before your visit to confirm the address.
- What is Denis Lerner's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Denis Lerner accept Medicare assignment?
- Yes. Medicare's clinician data says Denis Lerner 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 Denis Lerner?
- (516) 705-2689, as listed in official Medicare / NPI Registry data.
- What is Denis Lerner's NPI number?
- 1740666056. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Denis Lerner works
Medicare's Facility Affiliation Data lists Denis Lerner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Medical CenterRockville Centre, NY · Acute Care Hospital · CCN 330259
- New York Community Hospital of Brooklyn, Inc.Brooklyn, NY · Acute Care Hospital · CCN 330019
- South Brooklyn HealthBrooklyn, NY · Acute Care Hospital · CCN 330196
- Suny/Downstate University Hospital of BrooklynBrooklyn, NY · Acute Care Hospital · CCN 330350
Practice locations
Addresses where Denis Lerner is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 N Village AveRockville Center, NY 11570 (516) 705‑2689
- 2064 Cropsey Ave, Suite 1gBrooklyn, NY 11214 (718) 975‑8765
Group practices
Medicare enrollment lists Denis Lerner as a member of these groups (CMS data updated 2026-10-02).
- Southwest Suffolk Medical PC199 clinicians in the group
- Seagate Family Medicine Associates, LLC7 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Rockville Center
Clinicians with the same Medicare primary specialty in Rockville Center, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740666056 |
| 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