Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Karin E Grann, N.P.

Acute Care Nurse Practitioner in Willimantic, CT · enumerated 2011.

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

National Provider Identifier

1730477761

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Registry record

Entity type Individual (Type 1)

Name Ms. Karin E Grann

Credential N.P.

Sex Female

Practice address 112 Mansfield Ave, Willimantic, CT, 06226

Phone (203) 284-1340

Fax (203) 265-4557

Enumeration date Jul 12, 2011

Last updated in NPPES Mar 1, 2012

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4702 (CT) Primary

163W00000X Registered Nurse Nursing Service Providers · License 82608 (CT) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
82608	Other	CT	LICENSE

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Karin Grann?

Karin Grann is registered in NPPES with the primary taxonomy of Acute Care Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Robert Bundy Pulmonary Disease Physician · Willimantic, CT NPI 1962400630 Anna Bunch Nurse Practitioner · Willimantic, CT NPI 1336149459 Marlene Schwartz Pulmonary Disease Physician · Willimantic, CT NPI 1003892829 Tracy Hawthorne Physician Assistant · Willimantic, CT NPI 1528046646 Nadia Nashid Anatomic Pathology & Clinical Pathology Physician · Willimantic, CT NPI 1932189693 Marilyn Kritzman Anatomic Pathology & Clinical Pathology Physician · Willimantic, CT NPI 1245210913 Marc Guttman Emergency Medicine Physician · Willimantic, CT NPI 1295709186 Margaret Woznica Pulmonary Disease Physician · Willimantic, CT NPI 1154399558

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-01.