Quick answers
- Does Sasha A. Rouzeau accept Medicare assignment?
- Yes. Medicare's clinician data says Sasha A. Rouzeau 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.
- How many Medicare patients does Sasha A. Rouzeau see?
- In 2024, CMS data shows 191 Original Medicare patients and 197 services for Sasha A. Rouzeau. This counts Original Medicare only and measures volume, not quality.
- What is Sasha A. Rouzeau's NPI number?
- 1659490019. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sasha A. Rouzeau, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 191 |
|---|---|
| Services billed to Medicare | 197 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)95 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)70 services
- Anesthesia for procedure on small and large bowel using an endoscope (00813)12 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Arthritis42%
- Diabetes32%
- Ischemic heart disease29%
- Anxiety26%
Practice locations
Addresses where Sasha A. Rouzeau is enrolled with Medicare (CMS data updated October 2, 2026).
- 187 Veterans BlvdMassapequa, NY 11758 (516) 795‑5523
- 865 Merrick Ave, Suite 150nWestbury, NY 11590 (516) 542‑3636
Group practices
Medicare enrollment lists Sasha A. Rouzeau as a member of these groups (CMS data updated October 2, 2026).
- Gastrointestinal Care of Long Island PLLC183 clinicians in the group
- Meadowbrook Medical Associates14 clinicians in the group
Specialties
- Pain Managementprimary
Other pain management doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Gastrointestinal Care of Long Island PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of Ny Upstate Medical University |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659490019 |
| 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 October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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