Alejandra N. Santiago, MD
NPI 1215127261ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Ponce, PR
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Ponce, Puerto Rico, licensed in PR, with an NPI issued in July 2007. Their prescriptions cost Medicare Part D more than their services did: $3,417,877 for 15,698 claims, against $2,505 paid for services in 2024. Sanofi-Aventis U.S. LLC was the largest of 10 companies reporting payments in 2025, $1,906 in all, mostly food and beverage.
Overview
| NPI | 1215127261 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 26, 2007 |
| Last updated in NPPES | Aug 19, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 14047 | PR |
| General Acute Care Hospital | 282N00000X | 14047 | 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 - Endocrinology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 50 across 4 procedure codes |
| Paid by Medicare | $2,505 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,698 · 20,101 30-day fills |
|---|---|
| Patients | 1,234 |
| Total drug cost | $3,417,877 |
| Generic share | 45% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Endocrinology |
Industry payments (Open Payments)
- 2025$1,906 · 30 payments from 10 companies
- 2024$1,476 · 32 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $504.32 | 4 |
| Corcept Therapeutics | $371.04 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $302.29 | 8 |
| Bayer Healthcare Pharmaceuticals Inc. | $244.09 | 2 |
| Bayer Puerto Rico Inc. | $135.38 | 5 |
What the 2025 payments were for
- Food and Beverage$1,906 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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