Diego Lopez De Castilla Koster, MD MPH
NPI 1982854352ActiveIndividual· Internal Medicine, Infectious Disease· Ocala, FL
Internal Medicine, Infectious Disease (MD MPH) with Fletcher Hospital Inc and 2 other groups, practicing in Ocala, Florida. Their prescriptions cost Medicare Part D more than their services did: $160,806 for 286 claims, against $68,991 paid for services in 2024. Gilead Sciences, Inc. reported $125.00 in payments in 2025, mostly food and beverage. Lists Adventhealth Hendersonville and 1 other hospital as hospital affiliations.
Overview
| NPI | 1982854352 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD MPH |
| Sole proprietor | No |
| NPI issued | Sep 23, 2008 |
| Last updated in NPPES | Feb 27, 2025 |
| Certified by provider | Feb 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | MD6033975 | WA |
| Internal Medicine, Infectious Disease | 207RI0200X | 2023-02895 | NC |
| Internal Medicine, Infectious Disease | 207RI0200X | ME164166 | FL |
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 - Infectious Disease (FL); Practitioner - Infectious Disease (KS); Practitioner - Infectious Disease (NC); Practitioner - Infectious Disease (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 251 |
|---|---|
| Services billed | 887 across 20 procedure codes |
| Paid by Medicare | $68,991 |
Part D prescriptions in 2024
| Prescriptions (claims) | 286 · 328 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $160,806 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Fletcher Hospital IncColumbus, NC · 305 clinicians
- Lawrence Physicians LLCLawrence, KS · 226 clinicians
- Nhcs Physicians IncRocky Mount, NC · 97 clinicians
Hospital affiliations
- Adventhealth HendersonvilleHendersonville, NC
- Unc Health NashRocky Mount, NC
Industry payments (Open Payments)
- 2025$125.00 · 1 payment from 1 company
- 2024$29.91 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $125.00 | 1 |
What the 2025 payments were for
- Food and Beverage$125.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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