NPPES file of Aug 9, 2026

Elizabeth Diaz, BA

Behavior Analyst · Hayward, CA

Elizabeth Diaz, BA is a behavior analyst with a practice address in Hayward, California, and NPI 1992281059, issued on Jul 12, 2018. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1992281059
Name
Elizabeth Diaz
Credential
BA
Primary taxonomy
Behavior Analyst 103K00000X
Practice location
759 Medford Ave, Hayward, CA 94541
Phone
(510) 314-5565
Enumerated
Jul 12, 2018
Record last updated
Jul 12, 2018 (not updated in 8 years: call before relying on the address or phone)
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.
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Verify Elizabeth Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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150 behavior analyst records list a practice address in Hayward

They are 150 of the 3,993 NPPES records with a practice address in Hayward, and 20,348 behavior analyst records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 150 in Hayward → All 20,348 in California → Every provider in Hayward →

Other behavior analyst records in California

  1. Eduardo A HernandezTorrance, CA1811564081
  2. Ali AaronNapa, CA1689112575
  3. Melanie Ann AbadSan Mateo, CA1366808545
  4. Marine Abadzhyan, ANorth Hollywood, CA1437533494
  5. Ashley Aurora AbalosRancho Cucamonga, CA1225974124
  6. Valerie Abaniel, M.A BCBAFullerton, CA1336377340
  7. Althea Abaqueta, BCBAFountain Valley, CA1619272853
  8. Stephanie AbarcaCorona, CA1124987656
  9. Vanessa AbarcaSan Jose, CA1558900910
  10. Josette Abbas, BCBAWalnut Creek, CA1407357916

Common questions

What is Elizabeth Diaz, BA's NPI number?

Elizabeth Diaz, BA's National Provider Identifier (NPI) is 1992281059, issued on Jul 12, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Elizabeth Diaz, BA located?

The NPPES record lists a practice address at 759 Medford Ave, Hayward, CA, 94541. Phone: (510) 314-5565. Providers update this record themselves, so call before visiting.

How can I verify Elizabeth Diaz, BA's license?

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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.