Quick answers
- Which hospitals does Ryan D. Koski-Vacirca work at?
- Medicare's official clinician data lists Ryan D. Koski-Vacirca at 3 hospitals: Bridgeport Hospital, Greenwich Hospital Association - and Yale-New Haven Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan D. Koski-Vacirca see patients?
- Medicare's clinician data lists 3 practice locations, including New Haven, CT, Bridgeport, CT and Greenwich, CT. Call before your visit to confirm the address.
- What is Ryan D. Koski-Vacirca's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Ryan D. Koski-Vacirca accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan D. Koski-Vacirca 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 Ryan D. Koski-Vacirca?
- (203) 688-4242, as listed in official Medicare / NPI Registry data.
- What is Ryan D. Koski-Vacirca's NPI number?
- 1386227403. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan D. Koski-Vacirca works
Medicare's Facility Affiliation Data lists Ryan D. Koski-Vacirca at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bridgeport HospitalBridgeport, CT · Acute Care Hospital · CCN 070010
- Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · CCN 070018
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · CCN 070022
Practice locations
Addresses where Ryan D. Koski-Vacirca is enrolled with Medicare (CMS data updated 2026-10-02).
- 20 York StNew Haven, CT 06510 (203) 688‑4242
- 267 Grant StBridgeport, CT 06610 (203) 384‑3000
- 5 Perryridge RdGreenwich, CT 06830 (203) 863‑3000
Group practices
Medicare enrollment lists Ryan D. Koski-Vacirca as a member of these groups (CMS data updated 2026-10-02).
- Yale University2,645 clinicians in the group
- Bridgeport Hospital136 clinicians in the group
- Greenwich Hospital76 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in New Haven
Clinicians with the same Medicare primary specialty in New Haven, CT — not a recommendation.
Clinician information
| Medical school | Wake Forest University School Of Medicine |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386227403 |
| 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