Quick answers
- Where does Gregory M. Grimaldi see patients?
- Medicare's clinician data lists 10 practice locations, including Uniondale, NY, New York, NY and Basking Ridge, NJ. Call before your visit to confirm the address.
- What is Gregory M. Grimaldi's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Gregory M. Grimaldi accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory M. Grimaldi 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 Gregory M. Grimaldi?
- (516) 559-1000, as listed in official Medicare / NPI Registry data.
- What is Gregory M. Grimaldi's NPI number?
- 1073779617. 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 Gregory M. Grimaldi is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 1101 Hempstead TpkeUniondale, NY 11553 (516) 559‑1000
- 1275 York AveNew York, NY 10065 (212) 639‑2000
- 136 Mountain View BlvdBasking Ridge, NJ 07920
- 136 Mountainview BlvdBasking Ridge, NJ 07920 (908) 542‑3000
- 160 E 53rd StNew York, NY 10022 (212) 610‑0496
Group practices
Medicare enrollment lists Gregory M. Grimaldi as a member of these groups (CMS data updated 2026-10-02).
- MSK Monmouth295 clinicians in the group
- MSK Bergen255 clinicians in the group
- Memorial Sloan Kettering Cancer Center at Basking Ridge New Jersey229 clinicians in the group
- MSKCC Radiology Group193 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Uniondale
Clinicians with the same Medicare primary specialty in Uniondale, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073779617 |
| 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