NPPES file of Aug 9, 2026

Ionn Carlo Yamba Diaz, NP

Nurse Practitioner · Katy, TX

Ionn Carlo Yamba Diaz, NP is a nurse practitioner with a practice address in Katy, Texas, and NPI 1629603790, issued on Mar 9, 2020. Check the license (Texas AP145555, as entered in NPPES) with the Texas 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
1629603790
Name
Ionn Carlo Yamba Diaz
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
AP145555 TX
Self-reported in NPPES; status is on the state search
Practice location
24285 Katy Fwy Ste 300, Katy, TX 77494
Phone
(713) 486-5452
Enumerated
Mar 9, 2020
Record last updated
Jul 7, 2022
Fax
(713) 512-7104
Medicaid ID
417539001 TX
Medicare enrollment
Enrolled (PECOS I20201117000175); 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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Also registered at 24285 Katy Fwy Ste 300

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

  1. Machelle Allen, MSN, APRN, FNP-BCFamily Nurse Practitioner1447976618
  2. Savannah Bassett, NPGerontology Nurse Practitioner1598547804
  3. Monalisa BeraGerontology Nurse Practitioner1316688245
  4. Nikis Ellis, LPCProfessional Counselor1366159923
  5. Gina Heck, APRNFamily Nurse Practitioner1275982365
  6. Whitney Hicklin, APRN, FNPFamily Nurse Practitioner1770131153

Verify Ionn Carlo Yamba Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license AP145555
    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 Texas 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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5.0 times the Medicare Part D claims of the average nurse practitioner in 2024

5,515 Medicare Part D claims for 102 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 59 claims were for opioids.

  1. Ionn Carlo Diaz5,515
  2. Specialty average1,109

Most prescribed

  1. Atorvastatin Calcium286 claims
  2. Levothyroxine Sodium263 claims
  3. Furosemide181 claims
  4. Potassium Chloride156 claims
  5. Divalproex Sodium145 claims
  6. Eliquis134 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Collaborative Geriatrics IncKaty, TX

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

Ionn Carlo Yamba Diaz among 4,825 nurse practitioner records in Texas

Ionn Carlo Yamba Diaz, NP is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 62% of them.

  • NPI issued2020 · 62% of these records are older, 31% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2019 · median 2018 among the 2,618 with a school on file
  • Record last updated2022 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Texas

There are 4,825 nurse practitioner records in Texas.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Zelinjo Anagbogu, FNPKaty, TX 774941104101385
  2. Julie FedkeKaty, TX 774941205420882
  3. Erika HayesKaty, TX 774941104352145
  4. Funmilayo IbironkeKaty, TX 774941629557400
  5. Leslie Jones, FNPKaty, TX 774941285301911
  6. Chet Knox, FNP-CKaty, TX 774941154816221
  7. Linda Kouba, APNKaty, TX 774941437215258
  8. Ashley McVeigh, NPKaty, TX 774941255892527

Common questions

What is Ionn Carlo Yamba Diaz, NP's NPI number?

Ionn Carlo Yamba Diaz, NP's National Provider Identifier (NPI) is 1629603790, issued on Mar 9, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Ionn Carlo Yamba Diaz, NP located?

The NPPES record lists a practice address at 24285 Katy Fwy Ste 300, Katy, TX, 77494. Phone: (713) 486-5452. Providers update this record themselves, so call before visiting.

How can I verify Ionn Carlo Yamba Diaz, NP's license?

NPPES lists Texas license number AP145555, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Ionn Carlo Yamba Diaz, NP prescribe under Medicare Part D?

In 2024, Ionn Carlo Yamba Diaz, NP had 5,515 Medicare Part D claims for 102 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions 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.