Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marisa Walker, DDS

Dentist in Menlo Park, CA · enumerated 2013.

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

National Provider Identifier

1871835447

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Registry record

Entity type Individual (Type 1)

Name Dr. Marisa Walker

Credential DDS

Sex Female

Practice address 150 Middlefield Road, Suite 101, Menlo Park, CA, 94025

Phone (650) 321-4544

Fax (650) 321-8337

Enumeration date Mar 21, 2013

Last updated in NPPES Nov 10, 2014

Taxonomy & licenses

122300000X Dentist Dental Providers · License 57765 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Marisa Walker practice?

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

What is the NPI number for Marisa Walker?

The National Provider Identifier (NPI) for Marisa Walker is 1871835447, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-10.