Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Helen M Osborne Linseisen, FNP-C

Nurse Practitioner in Damariscotta, ME · enumerated 2006.

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

National Provider Identifier

1891764189

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Registry record

Entity type Individual (Type 1)

Name Helen M Osborne Linseisen

Credential FNP-C

Sex Female

Practice address 35 Miles St, Damariscotta, ME, 04543

Phone (207) 563-1040

Fax (207) 563-4389

Enumeration date Mar 17, 2006

Last updated in NPPES Apr 9, 2014

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 101-0026324 (VT) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CNP131049 (ME) Primary

Other identifiers

Identifier	Type	State	Issuer
0NP3536	Medicaid	VT	-
1891764189	Medicaid	ME	-

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 does Helen Osborne Linseisen practice?

The practice location on file with NPPES is in Damariscotta, ME. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Helen Osborne Linseisen?

The National Provider Identifier (NPI) for Helen Osborne Linseisen is 1891764189, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-09.