Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gisela M Merker, MFT

Marriage & Family Therapist in San Leandro, CA · enumerated 2007.

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

National Provider Identifier

1124175393

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Registry record

Entity type Individual (Type 1)

Name Gisela M Merker

Credential MFT

Sex Female

Practice address 13666 E 14th St, San Leandro, CA, 94578

Phone (510) 357-5515

Fax (510) 357-5112

Enumeration date Jan 3, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC30905 (CA) Primary

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

Where does Gisela Merker practice?

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

What is the NPI number for Gisela Merker?

The National Provider Identifier (NPI) for Gisela Merker is 1124175393, 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 2007-07-08.