Mervin De Guzman Diaz, MD
NPI 1548876121ActiveIndividual· General Practice· Humacao, PR
General Practice (MD) in Humacao, Puerto Rico, licensed in PR, with an NPI issued in September 2020. Part D covered 58 prescriptions written in 2024, 91% of them generic. Genzyme Corporation reported $116.11 in payments in 2024, mostly food and beverage. Lists Ryder Memorial Hospital Inc as a hospital affiliation.
Overview
| NPI | 1548876121 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Sep 19, 2020 |
| Last updated in NPPES | May 24, 2026 |
| Certified by provider | May 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 24685 | PR |
| Emergency Medicine | 207P00000X | 24685 | 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 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 - General Practice (PR) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 58 · 58 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $1,398 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | General Practice |
Hospital affiliation
- Ryder Memorial Hospital IncHumacao, PR
Industry payments (Open Payments)
- 2024$116.11 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $116.11 | 1 |
What the 2024 payments were for
- Food and Beverage$116.11 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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