Carlos Ruben Diaz, MD
NPI 1093701062ActiveIndividual· Internal Medicine, Cardiovascular Disease· Santurce, PR
Internal Medicine, Cardiovascular Disease (MD) in Santurce, Puerto Rico, trained at University of Puerto Rico School of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $633,395 for 9,272 claims, against $46,013 paid for services in 2024. Acera Surgical, Inc. was the largest of 3 companies reporting payments in 2025, $230.49 in all, mostly food and beverage.
Overview
| NPI | 1093701062 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Sep 23, 2005 |
| Last updated in NPPES | Oct 1, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 009970 | PR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| 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 - Cardiovascular Disease (Cardiology) (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 116 |
|---|---|
| Services billed | 671 across 10 procedure codes |
| Paid by Medicare | $46,013 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,272 · 25,232 30-day fills |
|---|---|
| Patients | 1,091 |
| Total drug cost | $633,395 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of Puerto Rico School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Hospital affiliation
- Hospital Pavia SanturceSan Juan, PR
Industry payments (Open Payments)
- 2025$230.49 · 3 payments from 3 companies
- 2024$172.11 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Acera Surgical, Inc. | $108.13 | 1 |
| Merck Sharp & Dohme LLC | $99.99 | 1 |
| Medtronic, Inc. | $22.37 | 1 |
What the 2025 payments were for
- Food and Beverage$230.49 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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