Doctor profile · Federal record

Dr. John Diponziano, DDS

Dentist · San Leandro, CA

  • NPI 1770569600
  • 21 yrs on file
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
680 Bancroft Ave
San Leandro, CA 945772904
(510) 569-0218
fax (510) 569-9714
Mailing address
Po Box 2346
Castro Valley, CA 945460346

Credentials & registration

NPPES · NUCC
NPI registered
December 2005 — 21 yrs on file
Profile last updated
April 18, 2011
Specialty taxonomy
122300000X — NUCC code
State license (1)
California #55315

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1770569600. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$120,817
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Hiossen, INC. 1 $120,817.06

By nature of payment

Honoraria
$120,817

Frequently asked questions

Auto-generated from federal data
What is Dr. John Diponziano's medical specialty?
Dr. John Diponziano practices Dentist in San Leandro, CA.
Where does Dr. John Diponziano practice?
Dr. John Diponziano practices at 680 Bancroft Ave, San Leandro, CA 945772904. Office phone: 5105690218.
What is Dr. John Diponziano's NPI?
Dr. John Diponziano's National Provider Identifier (NPI) is 1770569600, issued by NPPES.