NPPES file of Aug 9, 2026

Calix O. Diaz, PSY.D.

Clinical Psychologist · Saint Cloud, FL

Calix O. Diaz, PSY.D. is a clinical psychologist with a practice address in Saint Cloud, Florida, and NPI 1255736609, issued on Oct 28, 2014. Check the license on the Florida health license search; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1255736609
Name
Calix O. Diaz
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
4675 PR
Self-reported in NPPES; status is on the state search
Practice location
4735 Old Canoe Creek RD, Saint Cloud, FL 34769
Phone
(321) 257-3960
Enumerated
Oct 28, 2014
Record last updated
Jan 30, 2025
Medicare enrollment
Enrolled (PECOS I20220330000602); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 2,980 in Florida → Look up another NPI →

Also registered at 4735 Old Canoe Creek RD

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

  1. Tania Marrero, PSYDClinical Psychologist1154668861

Verify Calix O. Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license searchCheck 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
Open the Florida 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.

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Bills Medicare through one group practice

  1. Positive Mindset GroupSaint Cloud, FL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Calix O. Diaz among 2,980 clinical psychologist records in Florida

Calix O. Diaz, PSY.D. is one of 2,980 clinical psychologist records with a practice address in Florida. 14% 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, 33% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 26% of these records are
  • Graduated2012 · median 2004 among the 773 with a school on file
  • Record last updated2025 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Psychologist providers in Florida

There are 2,980 clinical psychologist records in Florida.

All 2,980 in Florida → Every provider in Saint Cloud → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Ann Adams, PSY.D.Saint Cloud, FL 347691093841884
  2. Brenda Arroyo CrespoSaint Cloud, FL 347691659917599
  3. Karem Cando Rovira, PH.D.Saint Cloud, FL 347691790893949
  4. Melisa Flores Ruiz, PSY.D.Saint Cloud, FL 347691225447543
  5. Jaymes Gonzales, PH.D.Saint Cloud, FL 347691598019838
  6. Tania Marrero, PSYDSaint Cloud, FL 347691154668861
  7. Melissa Santiago, PSYDKissimmee, FL 347581952955734
  8. Aixa Long, PSY.D.Wildwood, FL 347851316498140

Common questions

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

Calix O. Diaz, PSY.D.'s National Provider Identifier (NPI) is 1255736609, issued on Oct 28, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Calix O. Diaz, PSY.D. located?

The NPPES record lists a practice address at 4735 Old Canoe Creek RD, Saint Cloud, FL, 34769. Phone: (321) 257-3960. Providers update this record themselves, so call before visiting.

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

Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.

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.