Quick answers
- Where does Marisa A. Kollmeier see patients?
- Medicare's clinician data lists 4 practice locations, including Uniondale, NY, New York, NY and West Harrison, NY. Call before your visit to confirm the address.
- What is Marisa A. Kollmeier's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Marisa A. Kollmeier accept Medicare assignment?
- Yes. Medicare's clinician data says Marisa A. Kollmeier 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 Marisa A. Kollmeier offer telehealth?
- Medicare's clinician data says Marisa A. Kollmeier offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marisa A. Kollmeier?
- (516) 559-1000, as listed in official Medicare / NPI Registry data.
- What is Marisa A. Kollmeier's NPI number?
- 1215917612. 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 Marisa A. Kollmeier is enrolled with Medicare (CMS data updated 2026-10-02).
- 1101 Hempstead TpkeUniondale, NY 11553 (516) 559‑1000
- 1275 York AveNew York, NY 10065 (212) 639‑2000
- 500 Westchester AveWest Harrison, NY 10604 (914) 367‑7105
- 650 Commack RdCommack, NY 11725 (631) 623‑4300
Group practices
Medicare enrollment lists Marisa A. Kollmeier as a member of this group (CMS data updated 2026-10-02).
- Memorial Radiation Oncology Group92 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Uniondale
Clinicians with the same Medicare primary specialty in Uniondale, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215917612 |
| 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 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