NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Karen Leslie Martin, LMFT

Marriage & Family Therapist in Palo Alto, CA · enumerated 2007 · practices at County of Santa Clara.

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

National Provider Identifier

1104940527

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Registry record

Entity type Individual (Type 1)
Name Ms. Karen Leslie Martin
Credential LMFT
Sex Female
Practice address 231 Grant Ave, Palo Alto, CA, 94306
Phone (650) 321-5545
Fax (650) 321-5232
Enumeration date Mar 19, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC 35209 (CA) Primary
LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT credential

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 Karen Martin?
Karen Martin is registered in NPPES with the primary taxonomy of Marriage & Family Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.