NPPES file of Aug 9, 2026

David Diaz, O.D.

Optometrist · Gilbert, AZ

David Diaz, O.D. is an optometrist with a practice address in Gilbert, Arizona, and NPI 1255754438, issued on Jan 24, 2014. Check the license (Arizona 1957, as entered in NPPES) with the Arizona 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
1255754438
Name
David Diaz
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
1957 AZ
Self-reported in NPPES; status is on the state search
Practice location
2156 E. Williams Field RD., Gilbert, AZ 85296
Phone
(480) 814-2584
Enumerated
Jan 24, 2014
Record last updated
Jan 24, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(480) 963-9591
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

Verify David Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license 1957
    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 Arizona 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: $331.29

5 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Diaz$331.29
  2. Specialty average$769.99

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

David Diaz among 1,336 optometrist records in Arizona

David Diaz, O.D. is one of 1,336 optometrist records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 64% of them.

  • NPI issued2014 · 64% of these records are older, 34% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 56% of these records are
  • Record last updated2014 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Arizona

There are 1,336 optometrist records in Arizona.

The 8 optometrist records with the nearest ZIP codes

  1. John Castro, ODGilbert, AZ 852961508815275
  2. Jody Dagan, ODGilbert, AZ 852961639128887
  3. Kent Kneip, ODGilbert, AZ 852961487628095
  4. Vincent Piraino, O.D.Gilbert, AZ 852961679670798
  5. Jashpal Rajasansi, ODGilbert, AZ 852961457300600
  6. Karen Simon, O.D.Gilbert, AZ 852961013134600
  7. Anh Tieu, O.D.Gilbert, AZ 852961962604843
  8. Alma Yamamoto, O.D.Gilbert, AZ 852961053624650

Common questions

What is David Diaz, O.D.'s NPI number?

David Diaz, O.D.'s National Provider Identifier (NPI) is 1255754438, issued on Jan 24, 2014. An NPI identifies a provider in billing; it is not a license.

Where is David Diaz, O.D. located?

The NPPES record lists a practice address at 2156 E. Williams Field RD., Gilbert, AZ, 85296. Phone: (480) 814-2584. Providers update this record themselves, so call before visiting.

How can I verify David Diaz, O.D.'s license?

NPPES lists Arizona license number 1957, as entered by the provider. Search the Arizona 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.