Quick answers
- Does Denis Gratsianskiy accept Medicare assignment?
- Yes. Medicare's clinician data says Denis Gratsianskiy 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 Denis Gratsianskiy's NPI number?
- 1659865541. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Denis Gratsianskiy works
Medicare's Facility Affiliation Data lists Denis Gratsianskiy at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lenox Hill HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330119
Practice locations
Addresses where Denis Gratsianskiy is enrolled with Medicare (CMS data updated October 2, 2026).
- 1060 5th Ave, Suite 1bNew York, NY 10128 (212) 988‑8269
- 3016 30th Dr, Suite 3bAstoria, NY 11102 (718) 626‑0707
- 40 Berry Hill RdOyster Bay, NY 11771 (718) 626‑0707
Group practices
Medicare enrollment lists Denis Gratsianskiy as a member of these groups (CMS data updated October 2, 2026).
- Surgical Specialists of Greater NY LLP13 clinicians in the group
- Related Surgical Specialties, PC12 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Surgical Specialists of Greater NY LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659865541 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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