Quick answers
- Where does Nelson Vallejo see patients?
- Medicare's clinician data lists 3 practice locations, including Las Piedras, PR. Call before your visit to confirm the address.
- What is Nelson Vallejo's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Nelson Vallejo accept Medicare assignment?
- Yes. Medicare's clinician data says Nelson Vallejo 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 Nelson Vallejo?
- (787) 733-3508, as listed in official Medicare / NPI Registry data.
- What is Nelson Vallejo's NPI number?
- 1306812243. 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 Nelson Vallejo is enrolled with Medicare (CMS data updated 2026-10-02).
- 225 Ave Jose C BarosaLas Piedras, PR 00771 (787) 733‑3508
- PO BoxLas Piedras, PR 00771
- PO Box, Suite 8Las Piedras, PR 00771
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Puerto Rico
Clinicians with the same Medicare primary specialty in Puerto Rico — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306812243 |
| 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