Roberto J. Diaz, MD
Internal Medicine, Gastroenterology (MD) with Adventist Health System-Sunbelt Inc, practicing in Sebring, Florida. Mostly services rather than prescriptions: Medicare paid $42,456 for 247 patients in 2024, with only 32 Part D claims. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $480.28 in all, mostly food and beverage. Lists Adventhealth Sebring as a hospital affiliation. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1306809512 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 10, 2006 |
| Last updated in NPPES | Feb 3, 2026 |
| Certified by provider | Feb 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | ME0071926 | FL |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Florida, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Roberto A. Diaz · Nurse/Nurses Aide | 1128a1 | Aug 20, 2000 | Miami, FL |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 247 |
|---|---|
| Services billed | 411 across 20 procedure codes |
| Paid by Medicare | $42,456 |
Part D prescriptions in 2024
| Prescriptions (claims) | 32 · 34 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $442.71 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Adventist Health System-Sunbelt IncLake Placid, FL · 88 clinicians
Hospital affiliation
- Adventhealth SebringSebring, FL
Industry payments (Open Payments)
- 2025$480.28 · 11 payments from 3 companies
- 2024$146.59 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $199.92 | 7 |
| Abbvie Inc. | $153.13 | 3 |
| Madrigal Pharmaceuticals | $127.23 | 1 |
What the 2025 payments were for
- Food and Beverage$480.28 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in Florida →