Norma I. Vergne Santiago, M.D.
NPI 1043683840ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Juana Diaz, PR
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Juana Diaz, Puerto Rico, licensed in PR, with an NPI issued in November 2015. Their prescriptions cost Medicare Part D more than their services did: $2,317,297 for 8,663 claims, against $1,685 paid for services in 2024. Lilly USA, LLC was the largest of 5 companies reporting payments in 2025, $543.02 in all, mostly food and beverage. Lists Hospital Episcopal San Lucas II as a hospital affiliation.
Overview
| NPI | 1043683840 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 3, 2015 |
| Last updated in NPPES | Apr 17, 2026 |
| Certified by provider | Apr 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 19221 | 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 | 16 |
|---|---|
| Services billed | 24 across 7 procedure codes |
| Paid by Medicare | $1,685 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,663 · 10,253 30-day fills |
|---|---|
| Patients | 870 |
| Total drug cost | $2,317,297 |
| Generic share | 40% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Endocrinology |
Hospital affiliation
- Hospital Episcopal San Lucas IIPonce, PR
Industry payments (Open Payments)
- 2025$543.02 · 11 payments from 5 companies
- 2024$929.24 · 16 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $159.80 | 2 |
| Amgen Inc. | $137.88 | 3 |
| Perspectum Diagnostics Ltd | $117.00 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $99.94 | 4 |
| Dexcom, Inc. | $28.40 | 1 |
What the 2025 payments were for
- Food and Beverage$543.02 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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