Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Nantucket Cottage Hospital

End-Stage Renal Disease (ESRD) Treatment Clinic/Center in Nantucket, MA · enumerated 2007 · authorized official Margot Hartmann, President and Ceo.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1205993110

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Registry record

Entity type Organization (Type 2)

Legal business name Nantucket Cottage Hospital

Parent organization Nantucket Cottage Hospital

Practice address 57 Prospect St, Nantucket, MA, 02554

Phone (508) 825-8100

Fax (508) 825-8101

Enumeration date Jan 2, 2007

Last updated in NPPES Apr 16, 2013

Taxonomy & classification

261QE0700X End-Stage Renal Disease (ESRD) Treatment Clinic/Center Ambulatory Health Care Facilities · License 2044 (MA) Primary

Authorized official

Name Margot Hartmann

Title President and Ceo

Phone (508) 825-8201

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Nantucket Cottage Hospital located?

The practice location on file with NPPES is in Nantucket, MA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-04-16. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-16.