NPPES file of Aug 9, 2026

Stephen Robert John, DDS

Periodontics · San Carlos, CA

Stephen Robert John, DDS is a periodontics with a practice address in San Carlos, California, and NPI 1558790915, issued on Nov 6, 2013. Check the license (California 32858, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558790915
Name
Stephen Robert John
Credential
DDS
Primary taxonomy
Periodontics 1223P0300X
License number
32858 CA
Self-reported in NPPES; status is on the state search
Practice location
731 Walnut St, San Carlos, CA 94070
Phone
(650) 430-0186
Enumerated
Nov 6, 2013
Record last updated
Jan 14, 2024
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 731 Walnut St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Donald Curia, D.D.S.General Practice Dentistry1245386150

Verify Stephen Robert John in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 32858
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Industry payments in 2024: $19.54

1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 2,966 providers of this specialty with any payment received $1,338.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen John$19.54
  2. Specialty average$1,338.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Stephen Robert John among 929 periodontics records in California

Stephen Robert John, DDS is one of 929 periodontics records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 78% of them.

  • NPI issued2013 · 78% of these records are older, 18% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2024 · 78% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Periodontics providers in California

There are 929 periodontics records in California.

The 8 periodontics records with the nearest ZIP codes

  1. Mauricio Ronderos, DDS, MS, MPHRedwood City, CA 940651457402034
  2. Sangwook Jee, D.D.S., M.S.Redwood City, CA 940621801935606
  3. Ching Ng, D.D.S.Redwood City, CA 940621619055001
  4. Neha Tamhane, DDS, MSRedwood City, CA 940611467057190
  5. Navid Knight, DDSSouth San Francisco, CA 940801437270246
  6. Daniel Lin, DDSSunnyvale, CA 940861619178746
  7. Steve Chang, DDSSunnyvale, CA 940871700921632
  8. Alexander Kim, D.D.S.Sunnyvale, CA 940871669627790

Common questions

What is Stephen Robert John, DDS's NPI number?

Stephen Robert John, DDS's National Provider Identifier (NPI) is 1558790915, issued on Nov 6, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Robert John, DDS located?

The NPPES record lists a practice address at 731 Walnut St, San Carlos, CA, 94070. Phone: (650) 430-0186. Providers update this record themselves, so call before visiting.

How can I verify Stephen Robert John, DDS's license?

NPPES lists California license number 32858, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.