GREENWICH HOSPITAL
NPI 1609846088
General Acute Care Hospital in Greenwich, CT
About Greenwich Hospital NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREENWICH HOSPITAL (NPI 1609846088) is a healthcare organization registered as a general acute care hospital in Greenwich, Connecticut and active in the NPI registry since January 2006. The organization lists Jacqueline Wrinn, Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Greenwich Hospital is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
266Medicare enrollment records show 266 clinicians reassign Medicare billing to Greenwich Hospital, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 128 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 43
Nearest to this location (20)
See all 266Greenwich, CT 06830
Greenwich, CT 06830
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Greenwich Hospital's NPI number?
The NPI number for Greenwich Hospital is 1609846088. It was assigned to this organization in the NPPES registry on January 26, 2006.
Where is Greenwich Hospital located?
Greenwich Hospital is located at 5 Perryridge Rd, Greenwich, CT 06830. The listed phone number is (203) 863-3000.
What is Greenwich Hospital's specialty?
The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.
Is Greenwich Hospital enrolled in Medicare?
Yes. Greenwich Hospital is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Greenwich Hospital?
According to the CMS Revalidation Reassignment List (October 2026 release), 266 clinicians in 43 Medicare specialties reassign their Medicare billing to Greenwich Hospital. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Emergency Medicine (36), Pediatric Medicine (36) and Internal Medicine (25). Of these, 5 practice at this address and 128 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Greenwich Hospital was last updated on November 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Greenwich Hospital · NPI 1609846088
General Acute Care Hospital organization in Greenwich, Connecticut. Organization record, active in the CMS NPPES registry since January 26, 2006.
## Identity
- **NPI:** 1609846088 (Entity type: Organization)
- **Enumerated:** January 26, 2006
- **Primary specialty:** General Acute Care Hospital · taxonomy 282N00000X
- **Organization subpart:** No
- **Authorized official:** Jacqueline Wrinn, DIRECTOR
## Practice location
- **Address:** 5 PERRYRIDGE RD, Greenwich, CT 06830-4608
- **Phone:** (203) 863-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 266 clinicians in 43 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Emergency Medicine (36), Pediatric Medicine (36), Internal Medicine (25); 5 practice at this address and 128 within 10 miles; [full list](https://npiprofile.com/npi/1609846088/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 6, 2025
- **Other identifiers:** Medicaid 004025086 (CT); Medicaid 004041786 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1609846088) · Data from the CMS NPPES public registry.