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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Karen Nelson Larson, DDS

General Practice Dentistry in Alameda, CA · enumerated 2006 · practices at Webb Ave Dentistry.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1093874885

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Registry record

Entity type Individual (Type 1)
Name Karen Nelson Larson
Credential DDS
Sex Female
Practice address Alameda, CA, 94501
Phone (510) 521-9800
Fax (510) 521-1862
Enumeration date Dec 7, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 034141 (CA) Primary
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
942997070 Other CA TAX IDENTIFICATION NUMBER

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 Karen Larson practice?
The practice location on file with NPPES is in Alameda, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Karen Larson?
The National Provider Identifier (NPI) for Karen Larson is 1093874885, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.