Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hillary Dawn Hartwick, LMFT

Marriage & Family Therapist in Dover, NH · enumerated 2009 · practices at Wentworth Douglass Hospital.

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

National Provider Identifier

1679803589

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Registry record

Entity type Individual (Type 1)

Name Hillary Dawn Hartwick

Credential LMFT

Sex Female

Practice address 10 Members Way, Suite 401, Dover, NH, 03820

Phone (603) 742-9200

Enumeration date Dec 29, 2009

Last updated in NPPES Dec 16, 2015

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 173 (NH) Primary

LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT credential

Other identifiers

Identifier	Type	State	Issuer
3098561	Medicaid	NH	-

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

Is NPI 1679803589 active?

Yes, as of the latest NPPES snapshot, NPI 1679803589 is active (record last updated 2015-12-16).

How do I verify Hillary Hartwick's NPI record?

Cross-check NPI 1679803589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-16.