Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Madeline Serb

Marriage & Family Therapist in Walnut Creek, CA · enumerated 2025 · practices at Change Academy at Lake of the Ozarks.

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

National Provider Identifier

1306649512

Verified

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Registry record

Entity type Individual (Type 1)

Name Madeline Serb

Sex Female

Practice address 370 N Wiget Ln Ste 100, Walnut Creek, CA, 94598

Phone (925) 658-3935

Enumeration date Mar 31, 2025

Last updated in NPPES Apr 4, 2025

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 144508 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
144508	Other	CA	LICENSE

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 specialty is Madeline Serb?

Madeline Serb 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.

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.

Other providers at this practice address

Browse all →

Jessica Frihart Psychiatric/Mental Health Nurse Practitioner · Walnut Creek, CA NPI 1063667236 Change Academy at Lake of the Ozarks Mental Health Clinic/Center (Including Community Mental Health Center) · Walnut Creek, CA NPI 1376223511 George Lallian Marriage & Family Therapist · Walnut Creek, CA NPI 1811798689

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-04.