Quick answers
- Which hospitals does Alejandro A. Castro work at?
- Medicare's official clinician data lists Alejandro A. Castro at 2 hospitals: Porter Hospital Inc and Univ. of Vermont - Fletcher Allen Health Care. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alejandro A. Castro see patients?
- Medicare's clinician data lists 2 practice locations, including Burlington, VT and Middlebury, VT. Call before your visit to confirm the address.
- What is Alejandro A. Castro's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Alejandro A. Castro accept Medicare assignment?
- Yes. Medicare's clinician data says Alejandro A. Castro 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 Alejandro A. Castro?
- (802) 847-0000, as listed in official Medicare / NPI Registry data.
- What is Alejandro A. Castro's NPI number?
- 1053773135. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alejandro A. Castro works
Medicare's Facility Affiliation Data lists Alejandro A. Castro at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Porter Hospital IncMiddlebury, VT · Critical Access Hospital · CCN 471307
- Univ. of Vermont - Fletcher Allen Health CareBurlington, VT · Acute Care Hospital · CCN 470003
Practice locations
Addresses where Alejandro A. Castro is enrolled with Medicare (CMS data updated 2026-10-02).
- 111 Colchester AveBurlington, VT 05401 (802) 847‑0000
- 115 Porter DrMiddlebury, VT 05753 (802) 382‑3443
Group practices
Medicare enrollment lists Alejandro A. Castro as a member of these groups (CMS data updated 2026-10-02).
- University of Vermont Medical Center Inc1,208 clinicians in the group
- Porter Hospital Inc118 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Burlington
Clinicians with the same Medicare primary specialty in Burlington, VT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Vermont College Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053773135 |
| 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 2026-10-02, retrieved 2026-10-29
- 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