Quick answers
- Does Margaret J. Allison accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret J. Allison accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Margaret J. Allison's NPI number?
- 1336454842. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Margaret J. Allison is enrolled with Medicare (CMS data updated October 2, 2026).
- 27005 75th AveNew Hyde Park, NY 11040 (718) 470‑7000
- 600 Community Dr, Suite 400Manhasset, NY 11030 (516) 600‑1100
Group practices
Medicare enrollment lists Margaret J. Allison as a member of these groups (CMS data updated October 2, 2026).
- North Shore-Lij Medical PC6,440 clinicians in the group
- North Shore-Lij Medical Group PC30 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New Hyde Park
Clinicians with the same Medicare primary specialty in New Hyde Park, NY — not a recommendation.
Other clinicians in North Shore-Lij Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336454842 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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