Milciades Mercedes Maldonado, MD
NPI 1366435000ActiveIndividual· Internal Medicine· Guaynabo, PR
Internal Medicine (MD) in Guaynabo, Puerto Rico, licensed in PR, with an NPI issued in August 2005. Their prescriptions cost Medicare Part D more than their services did: $1,131,206 for 19,287 claims, against $20,549 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 4 companies reporting payments in 2025, $227.59 in all, mostly food and beverage. Lists Auxilio Mutuo Hospital as a hospital affiliation.
Overview
| NPI | 1366435000 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 29, 2005 |
| Last updated in NPPES | Jul 8, 2021 |
| Certified by provider | Jul 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 16910 | PR |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 61 |
|---|---|
| Services billed | 280 across 11 procedure codes |
| Paid by Medicare | $20,549 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,287 · 30,977 30-day fills |
|---|---|
| Patients | 856 |
| Total drug cost | $1,131,206 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Auxilio Mutuo HospitalSan Juan, PR
Industry payments (Open Payments)
- 2025$227.59 · 9 payments from 4 companies
- 2024$411.67 · 15 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $100.00 | 4 |
| Pbg Puerto Rico LLC | $55.92 | 2 |
| Astrazeneca Pharmaceuticals LP | $50.00 | 2 |
| Merck Sharp & Dohme LLC | $21.67 | 1 |
What the 2025 payments were for
- Food and Beverage$227.59 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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