Quick answers
- Does Marisol Santiago Irizarry accept Medicare assignment?
- Yes. Medicare's clinician data says Marisol Santiago Irizarry accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Marisol Santiago Irizarry see?
- In 2024, CMS data shows 23 Original Medicare patients and 77 services for Marisol Santiago Irizarry. This counts Original Medicare only and measures volume, not quality.
- What is Marisol Santiago Irizarry's NPI number?
- 1144776063. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Marisol Santiago Irizarry, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 23 |
|---|---|
| Services billed to Medicare | 77 |
| Different services or procedures | 3 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)36 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)17 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure70%
- Diabetes65%
Hospitals where Marisol Santiago Irizarry works
Medicare's Facility Affiliation Data lists Marisol Santiago Irizarry at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Hospital Metropolitano Dr SusoniArecibo, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400117
- Hospital Pavia AreciboArecibo, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400087
Practice locations
Addresses where Marisol Santiago Irizarry is enrolled with Medicare (CMS data updated October 2, 2026).
- 301 Calle Manuel Perez AvilesArecibo, PR 00612 (787) 880‑2954
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Puerto Rico
Clinicians with the same Medicare primary specialty in Puerto Rico — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144776063 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians