Quick answers
- Where does Marcos E. Rivera Santos see patients?
- Medicare's clinician data lists 3 practice locations, including Dorado, PR, Ponce, PR and Vega Alta, PR. Call before your visit to confirm the address.
- What is Marcos E. Rivera Santos's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does Marcos E. Rivera Santos accept Medicare assignment?
- Yes. Medicare's clinician data says Marcos E. Rivera Santos accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Marcos E. Rivera Santos?
- (787) 467-1267, as listed in official Medicare / NPI Registry data.
- What is Marcos E. Rivera Santos's NPI number?
- 1457234395. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Marcos E. Rivera Santos is enrolled with Medicare (CMS data updated 2026-10-02).
- 516 Calle Extension Sur, Local 2Dorado, PR 00646 (787) 467‑1267
- 5260 C Ngel Prez LugoPonce, PR 00716
- 528 Calle Padre DelgadoVega Alta, PR 00692
Specialties
- Clinical Social Workerprimary
Find other clinicians: Clinical Social Worker, Puerto Rico →
Other clinical social workers in Puerto Rico
Clinicians with the same Medicare primary specialty in Puerto Rico — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457234395 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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