Quick answers
- Where does Yolanda Mas Deleon see patients?
- Medicare's clinician data lists 2 practice locations, including Fajardo, PR. Call before your visit to confirm the address.
- What is Yolanda Mas Deleon's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Yolanda Mas Deleon accept Medicare assignment?
- Yes. Medicare's clinician data says Yolanda Mas Deleon 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 Yolanda Mas Deleon?
- (787) 863-4886, as listed in official Medicare / NPI Registry data.
- What is Yolanda Mas Deleon's NPI number?
- 1952372880. 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 Yolanda Mas Deleon is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Calle Un E, Suite 103Fajardo, PR 00738 (787) 863‑4886
- 10 Calle Union, 103 Fajardo Medical PlazaFajardo, PR 00738
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Fajardo
Clinicians with the same Medicare primary specialty in Fajardo, PR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1976 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952372880 |
| 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