Gabriel Diaz, ARNP-BC
NPI 1124492798ActiveIndividual· Nurse Practitioner, Gerontology· Washington, DC
Nurse Practitioner, Gerontology (ARNP-BC) with Medical Faculty Associates, Inc, practicing in Washington, District of Columbia. Their prescriptions cost Medicare Part D more than their services did: $200,737 for 1,327 claims, against $61,092 paid for services in 2024. Janssen Biotech, Inc. was the largest of 17 companies reporting payments in 2025, $4,029 in all, mostly food and beverage. Lists George Washington Univ Hospital as a hospital affiliation.
Overview
| NPI | 1124492798 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ARNP-BC |
| Sole proprietor | Yes |
| NPI issued | Nov 19, 2015 |
| Last updated in NPPES | Jul 20, 2022 |
| Certified by provider | Jul 20, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | NP500003630 | DC |
| Nurse Practitioner, Adult Health | 363LA2200X | ARNP 9323295 | FL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (DC); Practitioner - Nurse Practitioner (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 389 |
|---|---|
| Services billed | 1,795 across 18 procedure codes |
| Paid by Medicare | $61,092 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,327 · 1,900 30-day fills |
|---|---|
| Patients | 629 |
| Total drug cost | $200,737 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Medical Faculty Associates, IncWashington, DC · 672 clinicians
Hospital affiliation
- George Washington Univ HospitalWashington, DC
Industry payments (Open Payments)
- 2025$4,029 · 102 payments from 17 companies
- 2024$3,231 · 92 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $1,157 | 24 |
| Abbvie Inc. | $575.57 | 22 |
| Janssen Scientific Affairs, LLC | $449.43 | 4 |
| Genzyme Corporation | $314.83 | 8 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $306.66 | 7 |
What the 2025 payments were for
- Food and Beverage$3,945 · 101 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 gerontology nurse practitioners in Washington · All gerontology nurse practitioners in District of Columbia