Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Killeen Lyons, PHD, MFT

Q: What is the NPI number for Mary Lyons?

The National Provider Identifier (NPI) for Mary Lyons is 1235146168, a Type 1 (individual) record in the CMS NPPES registry.

Marriage & Family Therapist in Santa Rosa, CA · enumerated 2006.

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

National Provider Identifier

1235146168

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Killeen Lyons

Credential PHD, MFT

Sex Female

Practice address 1144 Sonoma Ave, Suite 117, Santa Rosa, CA, 95405

Phone (707) 526-7720

Fax (707) 526-1913

Enumeration date Aug 2, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC25654 (CA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary Lyons?

The National Provider Identifier (NPI) for Mary Lyons is 1235146168, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Lyons practice?

The practice location on file with NPPES is in Santa Rosa, 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 2007-07-08.