Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Katheleen Whall, MFT

Q: What is the NPI number for Mary Whall?

The National Provider Identifier (NPI) for Mary Whall is 1063661486, a Type 1 (individual) record in the CMS NPPES registry.

Marriage & Family Therapist in Fairfield, CA · enumerated 2008.

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

National Provider Identifier

1063661486

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Registry record

Entity type Individual (Type 1)

Name Mary Katheleen Whall

Credential MFT

Sex Female

Practice address 275 Beck Ave # Ms 5-250, Fairfield, CA, 94533

Phone (707) 784-8179

Enumeration date Sep 10, 2008

Last updated in NPPES Jun 27, 2017

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License IMF55309 (CA) Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License LMFT51407 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary Whall?

The National Provider Identifier (NPI) for Mary Whall is 1063661486, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Whall practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-06-27.