OrganizationActive
Greenwich Hospital
NPI 1326229279 · General Acute Care Hospital · Greenwich, CT
Greenwich Hospital is a General Acute Care Hospital organization in Greenwich, CT (NPI 1326229279).
Provider details
- NPI number
- 1326229279
- Entity type
- Organization
- Primary specialty
- General Acute Care HospitalHospitals
- Organization subpart
- No
- Authorized official
- Diane Demain, Diabetes Nurse Educator(203) 863-3786
- License
- R35320 (CT)
Specialties & taxonomies
Hospitals
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
55 Holly Hill Ln
Greenwich, CT 06830-6074
Phone: (203) 863-3786
Fax: (203) 863-3744
Street-level locationGet directions
Mailing address
55 Holly Hill Ln
Greenwich, CT 06830-6074
Registry dates
- Enumerated
- 2007-11-20
- Last updated
- 2007-11-20
Frequently asked questions
- What is Greenwich Hospital's NPI number?
- Greenwich Hospital's National Provider Identifier (NPI) is 1326229279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Greenwich Hospital?
- Greenwich Hospital is classified in the NPPES registry as General Acute Care Hospital (Hospitals).
- Where is Greenwich Hospital located?
- Greenwich Hospital's practice location on file with NPPES is 55 Holly Hill Ln, Greenwich, CT 06830-6074.
- What is Greenwich Hospital's phone number?
- The practice phone number listed in the NPPES registry for Greenwich Hospital is (203) 863-3786.
- Who is the authorized official for Greenwich Hospital?
- The authorized official listed on Greenwich Hospital's NPPES record is Diane Demain, Diabetes Nurse Educator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Greenwich Hospital's NPI active?
- Yes — Greenwich Hospital's NPI (1326229279) is active in the NPPES registry as of the last update on 2007-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.