Quick answers
- Where does Gwen Grenard see patients?
- Medicare's clinician data lists 1 practice location in Great Neck, NY. Call before your visit to confirm the address.
- What is Gwen Grenard's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does Gwen Grenard accept Medicare assignment?
- Yes. Medicare's clinician data says Gwen Grenard 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 Gwen Grenard offer telehealth?
- Medicare's clinician data says Gwen Grenard offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gwen Grenard?
- (516) 639-6392, as listed in official Medicare / NPI Registry data.
- What is Gwen Grenard's NPI number?
- 1417003732. 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 Gwen Grenard is enrolled with Medicare (CMS data updated 2026-10-02).
- 505 Northern Blvd, Suite 103Great Neck, NY 11021 (516) 639‑6392
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Great Neck
Clinicians with the same Medicare primary specialty in Great Neck, NY — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417003732 |
| 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