Quick answers
- Which hospitals does Mackenzie Hollister work at?
- Medicare's official clinician data lists Mackenzie Hollister at 2 hospitals: Ns/Lij HS Huntington Hospital and Ns/Lij HS Southside Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mackenzie Hollister see patients?
- Medicare's clinician data lists 1 practice location in Huntington, NY. Call before your visit to confirm the address.
- What is Mackenzie Hollister's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mackenzie Hollister accept Medicare assignment?
- Yes. Medicare's clinician data says Mackenzie Hollister 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 Mackenzie Hollister?
- (631) 824-6687, as listed in official Medicare / NPI Registry data.
- What is Mackenzie Hollister's NPI number?
- 1649008137. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mackenzie Hollister works
Medicare's Facility Affiliation Data lists Mackenzie Hollister at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ns/Lij HS Huntington HospitalHuntington, NY · Acute Care Hospital · CCN 330045
- Ns/Lij HS Southside HospitalBay Shore, NY · Acute Care Hospital · CCN 330043
Practice locations
Addresses where Mackenzie Hollister is enrolled with Medicare (CMS data updated 2026-10-02).
- 241 E Main St, Unit 1dHuntington, NY 11743 (631) 824‑6687
Group practices
Medicare enrollment lists Mackenzie Hollister as a member of this group (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Huntington
Clinicians with the same Medicare primary specialty in Huntington, NY — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Medical school | Hofstra North Shore - Lij School Of Medicine |
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649008137 |
| 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