Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Marc H Shishima, DDS

Dentist in Alhambra, CA · enumerated 2006.

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

National Provider Identifier

1427118918

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Registry record

Entity type Individual (Type 1)

Name Mr. Marc H Shishima

Credential DDS

Sex Male

Practice address 330 S Garfield Ave, #216, Alhambra, CA, 91801

Phone (626) 289-1148

Fax (626) 289-8327

Enumeration date Dec 12, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

122300000X Dentist Dental Providers · License 35028 (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

What is the NPI number for Marc Shishima?

The National Provider Identifier (NPI) for Marc Shishima is 1427118918, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marc Shishima practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.