William O. Hurtado-Santiago, MD
NPI 1912022310ActiveIndividual· Internal Medicine, Nephrology· Mayaguez, PR
Internal Medicine, Nephrology (MD) in Mayaguez, Puerto Rico, licensed in PR, with an NPI issued in March 2007. Their prescriptions cost Medicare Part D more than their services did: $1,595,810 for 4,949 claims, against $24,459 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 18 companies reporting payments in 2025, $50,208 in all, mostly speaking and faculty fees. Lists Hospital de la Concepcion and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1912022310 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 21, 2007 |
| Last updated in NPPES | Mar 12, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 16554 | 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 - Nephrology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 182 across 13 procedure codes |
| Paid by Medicare | $24,459 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,949 · 6,303 30-day fills |
|---|---|
| Patients | 691 |
| Total drug cost | $1,595,810 |
| Generic share | 59% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Hospital de la ConcepcionSan German, PR
- Hospital PereaMayaguez, PR
- Mayaguez Medical Center Dr Ramon Emeterio BetancesMayaguez, PR
Other facilities
- Atlantis MayaguezDialysis facility · Mayaguez, PR
Industry payments (Open Payments)
- 2025$50,208 · 92 payments from 18 companies
- 2024$60,266 · 112 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $19,286 | 23 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $15,294 | 15 |
| Lilly USA, LLC | $12,118 | 17 |
| Astrazeneca Pharmaceuticals LP | $1,785 | 10 |
| Nxstage Medical, Inc. | $343.33 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$26,818 · 24 payments
- Honoraria$15,913 · 6 payments
- Travel and Lodging$4,151 · 6 payments
- Food and Beverage$3,327 · 56 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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