Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Kathy Maasoumi, D.D.S.

Dentist in Lake Forest, CA · enumerated 2007.

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

National Provider Identifier

1407998941

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Registry record

Entity type Individual (Type 1)

Name Dr. Kathy Maasoumi

Credential D.D.S.

Sex Female

Practice address 22706 Aspan St, Suite 602, Lake Forest, CA, 92630

Phone (949) 307-6437

Enumeration date Feb 13, 2007

Last updated in NPPES Nov 14, 2014

Taxonomy & licenses

122300000X Dentist Dental Providers · License 41949 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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 Kathy Maasoumi?

Kathy Maasoumi is registered in NPPES with the primary taxonomy of Dentist. 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 2014-11-14.