Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Debbie Anne Lignell, MFT

Marriage & Family Therapist in Livermore, CA · enumerated 2007.

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

National Provider Identifier

1750581351

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Registry record

Entity type Individual (Type 1)

Name Ms. Debbie Anne Lignell

Credential MFT

Sex Female

Practice address Livermore, CA, 94551

Phone (925) 785-8492

Enumeration date Jul 20, 2007

Last updated in NPPES Jan 20, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC41858 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
000008166	Medicaid	CA	-

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 Debbie Lignell practice?

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

What is the NPI number for Debbie Lignell?

The National Provider Identifier (NPI) for Debbie Lignell is 1750581351, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-20.