Alexandra Rivera Castro, MD
NPI 1053921023 · General Practice Physician · San Juan, PR
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Rivera Castro, MD is a General Practice Physician provider in San Juan, PR (NPI 1053921023).
Provider details
- NPI number
- 1053921023
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 22873 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- Centro Medico De Puerto Rico Barrio MonacillosSan Juan, PR 00935-0001Phone: (787) 777-3535
Registry dates
- Enumerated
- 2020-08-05
- Last updated
- 2022-10-09
- Certified
- 2022-10-09
Frequently asked questions
- What is Alexandra Rivera Castro's NPI number?
- Alexandra Rivera Castro's National Provider Identifier (NPI) is 1053921023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Rivera Castro's specialty?
- Alexandra Rivera Castro is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Alexandra Rivera Castro located?
- Alexandra Rivera Castro's practice location on file with NPPES is Carr 22 Barrio Monacillos Hospital Oncologico, San Juan, PR 00935-0001.
- What is Alexandra Rivera Castro's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Rivera Castro is (787) 763-4149.
- Does Alexandra Rivera Castro accept Medicare?
- Alexandra Rivera Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Rivera Castro's NPI active?
- Yes — Alexandra Rivera Castro's NPI (1053921023) is active in the NPPES registry as of the last update on 2022-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.