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

Dr. Stephen Robert John, DDS

Periodontics in San Carlos, CA · enumerated 2013 · practices at Stephen R. John, DDS, Apc.

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

National Provider Identifier

1558790915

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Registry record

Entity type Individual (Type 1)
Name Dr. Stephen Robert John
Credential DDS
Sex Male
Practice address San Carlos, CA, 94070
Phone (650) 430-0186
Enumeration date Nov 6, 2013
Last updated in NPPES Jan 14, 2024

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 32858 (CA) Secondary
1223P0300X Periodontics Dental Providers · License 32858 (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

Where does Stephen John practice?
The practice location on file with NPPES is in San Carlos, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stephen John?
The National Provider Identifier (NPI) for Stephen John is 1558790915, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-14.