Quick answers
- Which hospitals does Sarah Iwata work at?
- Medicare's official clinician data lists Sarah Iwata at 4 hospitals: Danbury Hospital, Healthalliance Hospital Marys Avenue Campus, Sharon Hospital and Vassar Brothers Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sarah Iwata see patients?
- Medicare's clinician data lists 6 practice locations, including Valhalla, NY, Mount Kisco, NY and Danbury, CT. Call before your visit to confirm the address.
- What is Sarah Iwata's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Sarah Iwata accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah Iwata 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 Sarah Iwata?
- (914) 241-1050, as listed in official Medicare / NPI Registry data.
- What is Sarah Iwata's NPI number?
- 1215381637. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sarah Iwata works
Medicare's Facility Affiliation Data lists Sarah Iwata at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Danbury HospitalDanbury, CT · Acute Care Hospital · CCN 070033
- Healthalliance Hospital Marys Avenue CampusKingston, NY · Acute Care Hospital · CCN 330224
- Sharon HospitalSharon, CT · Acute Care Hospital · CCN 070004
- Vassar Brothers Medical CenterPoughkeepsie, NY · Acute Care Hospital · CCN 330023
Practice locations
Addresses where Sarah Iwata is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 100 Woods RdValhalla, NY 10595
- 110 S Bedford RdMount Kisco, NY 10549 (914) 241‑1050
- 24 Hospital AveDanbury, CT 06810 (203) 739‑7118
- 396 BroadwayKingston, NY 12401 (845) 331‑3131
- 45 Reade PlPoughkeepsie, NY 12601 (845) 454‑8500
Group practices
Medicare enrollment lists Sarah Iwata as a member of these groups (CMS data updated 2026-10-02).
- Optum Medical Care PC1,010 clinicians in the group
- Westchester Medical Center Advanced Physician Services PC897 clinicians in the group
- Nuvance Health Medical Practice Ct Inc747 clinicians in the group
- North American Partners in Anesthesia LLP439 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Valhalla
Clinicians with the same Medicare primary specialty in Valhalla, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215381637 |
| 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 2026-10-02, retrieved 2026-10-29
- 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