Ionn Carlo Yamba Diaz, NP
NPI 1629603790ActiveIndividual· Nurse Practitioner· Katy, TX
Nurse Practitioner (NP) with Collaborative Geriatrics Inc, practicing in Katy, Texas. Their prescriptions cost Medicare Part D more than their services did: $327,372 for 5,515 claims, against $88,458 paid for services in 2024. Neurocrine Biosciences, Inc. reported $84.57 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1629603790 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Mar 9, 2020 |
| Last updated in NPPES | Jul 7, 2022 |
| Certified by provider | Jul 7, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | AP145555 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 1,071 across 15 procedure codes |
| Paid by Medicare | $88,458 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,515 · 5,552 30-day fills |
|---|---|
| Patients | 102 |
| Total drug cost | $327,372 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Collaborative Geriatrics IncKaty, TX · 46 clinicians
Industry payments (Open Payments)
- 2025$84.57 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Neurocrine Biosciences, Inc. | $84.57 | 1 |
What the 2025 payments were for
- Food and Beverage$84.57 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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