Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Alan Graham, DDS

Dentist in Danville, CA · enumerated 2006 · practices at Mark Graham, DDS, Inc..

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

National Provider Identifier

1023115896

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Alan Graham

Credential DDS

Sex Male

Practice address 907 San Ramon Valley Blvd Ste 104, Danville, CA, 94526

Phone (925) 820-3000

Fax (925) 820-6293

Enumeration date Sep 20, 2006

Last updated in NPPES Dec 27, 2024

Taxonomy & licenses

122300000X Dentist Dental Providers · License 54870 (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

What specialty is Mark Graham?

Mark Graham 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.

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.

Other providers at this practice address

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Mark Graham, DDS, Inc. Dental Clinic/Center · Danville, CA NPI 1306578497

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-27.