Ionn Carlo Diaz, NP
NPI 1629603790 · Nurse Practitioner · Katy, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ionn Carlo Diaz, NP is a Nurse Practitioner provider in Katy, TX (NPI 1629603790).
Provider details
- NPI number
- 1629603790
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Male
- Sole proprietor
- Yes
- License
- AP145555 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
988 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 487 | $127 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 180 | $89 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 112 | $128 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 56 | $62 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 41 | $52 |
| Chronic Care Management Services for Two Or More Chronic Conditions, First 30 Minutes Provided Personally By Health Care Professional, Per Calendar Month |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 286 | 34 |
| Levothyroxine Sodium | 263 | 25 |
| Furosemide | 181 | 27 |
| Potassium Chloride | 156 | 29 |
| Divalproex Sodium | 145 | 12 |
| Apixabanbrand: Eliquis | 134 | 17 |
| Metoprolol Tartrate | 111 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-09
- Last updated
- 2022-07-07
- Certified
- 2022-07-07
Frequently asked questions
- What is Ionn Carlo Diaz's NPI number?
- Ionn Carlo Diaz's National Provider Identifier (NPI) is 1629603790, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ionn Carlo Diaz's specialty?
- Ionn Carlo Diaz is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ionn Carlo Diaz located?
- Ionn Carlo Diaz's practice location on file with NPPES is 24285 Katy Fwy Ste 300, Katy, TX 77494-1327.
- What is Ionn Carlo Diaz's phone number?
- The practice phone number listed in the NPPES registry for Ionn Carlo Diaz is (713) 486-5452.
- Does Ionn Carlo Diaz accept Medicare?
- Ionn Carlo Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ionn Carlo Diaz's NPI active?
- Yes — Ionn Carlo Diaz's NPI (1629603790) is active in the NPPES registry as of the last update on 2022-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.