Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Keith Roger Gronbach, D.D.S.

Oral and Maxillofacial Surgery (Dentist) in Lafayette, CA · enumerated 2007 · practices at Keith R. Gronbach, D.D.S., Inc..

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

National Provider Identifier

1992853204

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Registry record

Entity type Individual (Type 1)

Name Dr. Keith Roger Gronbach

Credential D.D.S.

Sex Male

Practice address 3799 Mt Diablo Blvd, Lafayette, CA, 94549

Phone (925) 283-4050

Fax (925) 283-5340

Enumeration date Jan 5, 2007

Last updated in NPPES Jul 22, 2020

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 44317 (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 is the NPI number for Keith Gronbach?

The National Provider Identifier (NPI) for Keith Gronbach is 1992853204, a Type 1 (individual) record in the CMS NPPES registry.

Where does Keith Gronbach practice?

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

Other providers at this practice address

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Keith R. Gronbach, D.D.S., Inc. Oral and Maxillofacial Surgery (Dentist) · Lafayette, CA NPI 1093808594 Leonard Saputo Internal Medicine Physician · Lafayette, CA NPI 1295825438

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-22.