Dianne Fernandez
NPI 1639636426ActiveIndividual· Nurse Practitioner, Gerontology· Duarte, CA
Nurse Practitioner, Gerontology with City of Hope Medical Foundation, practicing in Duarte, California. Their prescriptions cost Medicare Part D more than their services did: $429,219 for 344 claims, against $1,063 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 3 companies reporting payments in 2025, $149.14 in all, mostly food and beverage.
Overview
| NPI | 1639636426 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Feb 27, 2019 |
| Last updated in NPPES | Dec 11, 2020 |
| Certified by provider | Dec 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | NP95012196 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 15 across 4 procedure codes |
| Paid by Medicare | $1,063 |
Part D prescriptions in 2024
| Prescriptions (claims) | 344 · 370 30-day fills |
|---|---|
| Patients | 77 |
| Total drug cost | $429,219 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2025$149.14 · 5 payments from 3 companies
- 2024$404.78 · 15 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $80.60 | 3 |
| Pfizer Inc. | $38.01 | 1 |
| Astellas Pharma US Inc | $30.53 | 1 |
What the 2025 payments were for
- Food and Beverage$149.14 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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