John P. Diponziano, DDS
Dentist · San Leandro, CA
John P. Diponziano, DDS is a dentist with a practice address in San Leandro, California, and NPI 1770569600, issued on Dec 22, 2005. Check the license (California 55315, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John P. Diponziano
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 55315 CA
Self-reported in NPPES; status is on the state search - Practice location
- 680 Bancroft Ave, San Leandro, CA 94577
- Phone
- (510) 569-0218
- Enumerated
- Dec 22, 2005
- Record last updated
- Apr 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (510) 569-9714
- Entity
- Type 1 · individual
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Verify John P. Diponziano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 55315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $120,817.06
1 payment: honoraria; the largest payer was Hiossen, Inc. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
John P. Diponziano among 14,729 dentist records in California
John P. Diponziano, DDS is one of 14,729 dentist records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2011 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 dentist records list a practice address in San Leandro
They are 46 of the 4,976 NPPES records with a practice address in San Leandro, and 14,729 dentist records in California.
All 14,729 in California → Every provider in San Leandro → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Gary Aikawa, D.D.S.San Leandro, CA 945771881683845
- Elena Davidson, D.D.S.San Leandro, CA 945771497914501
- Andrew Jang, D.D.SSan Leandro, CA 945771659649622
- Michael Lee, DDSSan Leandro, CA 945771649299140
- Mona Moy, DDSSan Leandro, CA 945771205009677
- Bich-Ngoc Nguyen, DDSSan Leandro, CA 945771063682268
- Chris Park, DDSSan Leandro, CA 945771013343102
- James Russo, D.D.S.San Leandro, CA 945771750495461
Common questions
What is John P. Diponziano, DDS's NPI number?
John P. Diponziano, DDS's National Provider Identifier (NPI) is 1770569600, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John P. Diponziano, DDS located?
The NPPES record lists a practice address at 680 Bancroft Ave, San Leandro, CA, 94577. Phone: (510) 569-0218. Providers update this record themselves, so call before visiting.
How can I verify John P. Diponziano, DDS's license?
NPPES lists California license number 55315, 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.