Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael S Tobian, DDS

Dentist in Walnut Creek, CA · enumerated 2006.

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

National Provider Identifier

1922018407

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael S Tobian

Credential DDS

Sex Male

Practice address 301 Lennon Ln, Suite 102, Walnut Creek, CA, 94598

Phone (925) 407-1155

Fax (925) 407-1161

Enumeration date Aug 8, 2006

Last updated in NPPES Jun 14, 2016

Taxonomy & licenses

122300000X Dentist Dental Providers · License 36290 (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 Michael Tobian?

Michael Tobian 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 2016-06-14.