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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John Joseph Petrini Jr., D.D.S, M.S.

Prosthodontics in Walnut Creek, CA · enumerated 2006 · practices at Kain II DDS Inc.

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

National Provider Identifier

1679634679

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Registry record

Entity type Individual (Type 1)
Name Dr. John Joseph Petrini Jr.
Credential D.D.S, M.S.
Sex Male
Practice address Walnut Creek, CA, 94596
Phone (925) 935-4040
Enumeration date Dec 13, 2006
Last updated in NPPES May 26, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223P0700X Prosthodontics Dental Providers · License 60724749 (WA) 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 NPI 1679634679 active?
Yes, as of the latest NPPES snapshot, NPI 1679634679 is active (record last updated 2020-05-26).
How do I verify John Petrini's NPI record?
Cross-check NPI 1679634679 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-26.