Quick answers
- Which hospitals does Douglas E. Gladstone work at?
- Medicare's official clinician data lists Douglas E. Gladstone at 3 hospitals: Lenox Hill Hospital, Long Island Jewish Medical Center and North Shore University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas E. Gladstone see patients?
- Medicare's clinician data lists 8 practice locations, including New York, NY, New Hyde Park, NY and Manhasset, NY. Call before your visit to confirm the address.
- What is Douglas E. Gladstone's specialty?
- Medicare lists Medical Oncology as the primary specialty.
- Does Douglas E. Gladstone accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas E. Gladstone 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 Douglas E. Gladstone offer telehealth?
- Medicare's clinician data says Douglas E. Gladstone offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Douglas E. Gladstone?
- (212) 434-4460, as listed in official Medicare / NPI Registry data.
- What is Douglas E. Gladstone's NPI number?
- 1386660207. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas E. Gladstone works
Medicare's Facility Affiliation Data lists Douglas E. Gladstone at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lenox Hill HospitalNew York, NY · Acute Care Hospital · CCN 330119
- Long Island Jewish Medical CenterNew Hyde Park, NY · Acute Care Hospital · CCN 330195
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
Practice locations
Addresses where Douglas E. Gladstone is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 210 E 64th StNew York, NY 10065 (212) 434‑4460
- 210 E 64th St, Fl 4New York, NY 10065 (212) 434‑4460
- 27005 75th AveNew Hyde Park, NY 11040 (718) 470‑4449
- 300 Community DrManhasset, NY 11030 (516) 734‑8900
- 330 Community DrManhasset, NY 11030 (516) 562‑8005
Group practices
Medicare enrollment lists Douglas E. Gladstone as a member of this group (CMS data updated 2026-10-02).
- North Shore Health System Medical Faculty Group Practice Inc164 clinicians in the group
Specialties
- Medical Oncologyprimary
Other oncologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386660207 |
| 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