NPPES file of Aug 9, 2026

Rosaura Diaz, COTA/L

Occupational Therapy Assistant · Bellflower, CA

Rosaura Diaz, COTA/L is an occupational therapy assistant with a practice address in Bellflower, California, and NPI 1285296178, issued on Jul 1, 2019. Check the license (California OTA4728, as entered in NPPES) 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
1285296178
Name
Rosaura Diaz
Credential
COTA/L
Primary taxonomy
Occupational Therapy Assistant 224Z00000X
License number
OTA4728 CA
Self-reported in NPPES; status is on the state search
Practice location
17042 Bellflower Blvd, Bellflower, CA 90706
Phone
(562) 991-1324
Enumerated
Jul 1, 2019
Record last updated
Jul 1, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(562) 502-9862
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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8 nearest occupational therapy assistant records → All 1,869 in California → Look up another NPI →

Also registered at 17042 Bellflower Blvd

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

  1. Anne Armanyous, DPTPhysical Therapist1578013447
  2. George Bay-An, PTAPhysical Therapy Assistant1558870519
  3. Ivanlaurent Calara, LVN, COTA/LOccupational Therapy Assistant1366981185
  4. Loise Elorde, COTA/LOccupational Therapy Assistant1679338214
  5. Justine Esguerra, PTAPhysical Therapy Assistant1881314003
  6. Amanda Fisher, COTA/LOccupational Therapy Assistant1376164806

Verify Rosaura Diaz 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 OTA4728    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

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Rosaura Diaz among 1,869 occupational therapy assistant records in California

Rosaura Diaz, COTA/L is one of 1,869 occupational therapy assistant records with a practice address in California. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2019, is newer than 44% of them.

  • NPI issued2019 · 44% of these records are older, 49% newer
  • In a Medicare fileNo · under 1% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2019 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 224Z00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Occupational Therapy Assistant providers in California

There are 1,869 occupational therapy assistant records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,869 in California → Every provider in Bellflower → Occupational Therapy Assistant nationwide →

The 8 occupational therapy assistant records with the nearest ZIP codes

  1. Erika AriasBellflower, CA 907061225737794
  2. Jasmin BalleraBellflower, CA 907061659077758
  3. Ivanlaurent Calara, LVN, COTA/LBellflower, CA 907061366981185
  4. Melanie Dela Cruz, COTABellflower, CA 907061194196600
  5. Loise Elorde, COTA/LBellflower, CA 907061679338214
  6. Amanda Fisher, COTA/LBellflower, CA 907061376164806
  7. Nicole Mariscal, COTA/LBellflower, CA 907061700369592
  8. Alexis Theodore, COTA/LBellflower, CA 907061669111712

Common questions

What is Rosaura Diaz, COTA/L's NPI number?

Rosaura Diaz, COTA/L's National Provider Identifier (NPI) is 1285296178, issued on Jul 1, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Rosaura Diaz, COTA/L located?

The NPPES record lists a practice address at 17042 Bellflower Blvd, Bellflower, CA, 90706. Phone: (562) 991-1324. Providers update this record themselves, so call before visiting.

How can I verify Rosaura Diaz, COTA/L's license?

NPPES lists California license number OTA4728, 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. 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.