Quick answers
- Which hospitals does Xavier Diaz-Hernandez work at?
- Medicare's official clinician data lists Xavier Diaz-Hernandez at 5 hospitals: Ascension St Vincent's Riverside, Ascension St Vincent's Southside, Ascension St Vincent's St Johns County, Baptist Health Medical Center - Jacksonville and Flagler Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Xavier Diaz-Hernandez see patients?
- Medicare's clinician data lists 4 practice locations, including Jacksonville, FL, Saint Johns, FL and St Johns, FL. Call before your visit to confirm the address.
- What is Xavier Diaz-Hernandez's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Xavier Diaz-Hernandez accept Medicare assignment?
- Yes. Medicare's clinician data says Xavier Diaz-Hernandez 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 Xavier Diaz-Hernandez?
- (904) 308-2006, as listed in official Medicare / NPI Registry data.
- What is Xavier Diaz-Hernandez's NPI number?
- 1073018586. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Xavier Diaz-Hernandez works
Medicare's Facility Affiliation Data lists Xavier Diaz-Hernandez at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension St Vincent's RiversideJacksonville, FL · Acute Care Hospital · CCN 100040
- Ascension St Vincent's SouthsideJacksonville, FL · Acute Care Hospital · CCN 100307
- Ascension St Vincent's St Johns CountySt. Johns, FL · Acute Care Hospital · CCN 100361
- Baptist Health Medical Center - JacksonvilleJacksonville, FL · Acute Care Hospital · CCN 100088
- Flagler HospitalSaint Augustine, FL · Acute Care Hospital · CCN 100090
Practice locations
Addresses where Xavier Diaz-Hernandez is enrolled with Medicare (CMS data updated 2026-10-02).
- 1801 Barrs St, Suite 120Jacksonville, FL 32204 (904) 308‑2006
- 300 Saint Elizabeth WaySaint Johns, FL 32259
- 300 Saint Elizabeth WaySt Johns, FL 32259
- 4205 Belfort Rd, Suite 2065Jacksonville, FL 32216 (904) 296‑2631
Group practices
Medicare enrollment lists Xavier Diaz-Hernandez as a member of this group (CMS data updated 2026-10-02).
- St Vincent's Ambulatory Care Inc310 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Florida →
Other cardiologists in Jacksonville
Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073018586 |
| 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