Quick answers
- Which hospitals does Jonathan Mallen work at?
- Medicare's official clinician data lists Jonathan Mallen at 3 hospitals: Mount Sinai South Nassau, North Shore University Hospital and Plainview Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Mallen see patients?
- Medicare's clinician data lists 3 practice locations, including Woodbury, NY, Massapequa, NY and Plainview, NY. Call before your visit to confirm the address.
- What is Jonathan Mallen's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Jonathan Mallen accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Mallen 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 Jonathan Mallen?
- (516) 364-0070, as listed in official Medicare / NPI Registry data.
- What is Jonathan Mallen's NPI number?
- 1588663140. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan Mallen works
Medicare's Facility Affiliation Data lists Jonathan Mallen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai South NassauOceanside, NY · Acute Care Hospital · CCN 330198
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
- Plainview HospitalPlainview, NY · Acute Care Hospital · CCN 330331
Practice locations
Addresses where Jonathan Mallen is enrolled with Medicare (CMS data updated 2026-10-02).
- 205 Froehlich Farm BlvdWoodbury, NY 11797 (516) 364‑0070
- 5840 Merrick RdMassapequa, NY 11758 (516) 681‑8822
- 651 Old Country RdPlainview, NY 11803 (516) 681‑8822
Group practices
Medicare enrollment lists Jonathan Mallen as a member of these groups (CMS data updated 2026-10-02).
- The Central Orthopedic Group L L P23 clinicians in the group
- South Island Orthopedics PC7 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Woodbury
Clinicians with the same Medicare primary specialty in Woodbury, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588663140 |
| 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