Quick answers
- Does Shai R. Posner accept Medicare assignment?
- Yes. Medicare's clinician data says Shai R. Posner 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 Shai R. Posner see?
- In 2024, CMS data shows 458 Original Medicare patients and 4,155 services for Shai R. Posner. This counts Original Medicare only and measures volume, not quality.
- What is Shai R. Posner's NPI number?
- 1295120863. 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 Shai R. Posner, 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 | 458 |
|---|---|
| Services billed to Medicare | 4,155 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)141 services
- Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (G0500)106 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)96 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)77 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)60 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 pressure74%
- Arthritis50%
- Ischemic heart disease42%
- Anxiety35%
- Diabetes33%
Hospitals where Shai R. Posner works
Medicare's Facility Affiliation Data lists Shai R. Posner 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.
- Ellis HospitalSchenectady, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330153
- Samaritan HospitalTroy, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330180
- St Mary's HealthcareAmsterdam, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330047
- St Peter's HospitalAlbany, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330057
Practice locations
Addresses where Shai R. Posner is enrolled with Medicare (CMS data updated October 2, 2026).
- 1101 Nott StSchenecctady, NY 12308 (518) 243‑4000
- 1375 Washington Ave, Suite 101Albany, NY 12206 (518) 533‑5000
- 1785 Route 9, Suite 101Halfmoon, NY 12065 (518) 533‑5000
Group practices
Medicare enrollment lists Shai R. Posner as a member of these groups (CMS data updated October 2, 2026).
- Ellis Hospital249 clinicians in the group
- Gastrointestinal Care of Long Island PLLC183 clinicians in the group
Specialties
- Internal Medicineprimary
- Gastroenterologyalso
Other internal medicine doctors in Schenecctady
Clinicians with the same Medicare primary specialty in Schenecctady, NY — not a recommendation.
Other clinicians in Ellis Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2015 (11 years since medical school) |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1295120863 |
| 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
- 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