Quick answers
- Which hospitals does Michael A. Castellano work at?
- Medicare's official clinician data lists Michael A. Castellano at 2 hospitals: Flagler Hospital and Shands Jacksonville. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael A. Castellano see patients?
- Medicare's clinician data lists 6 practice locations, including Jacksonville, FL and St Augustine, FL. Call before your visit to confirm the address.
- What is Michael A. Castellano's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty, and also Neurology.
- Does Michael A. Castellano accept Medicare assignment?
- Yes. Medicare's clinician data says Michael A. Castellano 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.
- Does Michael A. Castellano offer telehealth?
- Medicare's clinician data says Michael A. Castellano offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Michael A. Castellano?
- (904) 308-7300, as listed in official Medicare / NPI Registry data.
- What is Michael A. Castellano's NPI number?
- 1053728238. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael A. Castellano works
Medicare's Facility Affiliation Data lists Michael A. Castellano at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Flagler HospitalSaint Augustine, FL · Acute Care Hospital · CCN 100090
- Shands JacksonvilleJacksonville, FL · Acute Care Hospital · CCN 100001
Practice locations
Addresses where Michael A. Castellano is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1 Shircliff WayJacksonville, FL 32204 (904) 308‑7300
- 300 Health Park Blvd, Suite 5000St Augustine, FL 32086 (904) 383‑1022
- 400 Health Park BlvdSt Augustine, FL 32086 (904) 819‑4442
- 653 W 8th StJacksonville, FL 32209
- 653 W 8th St, Ufjp Cardiology DepartmentJacksonville, FL 32209 (904) 244‑4198
Group practices
Medicare enrollment lists Michael A. Castellano as a member of this group (CMS data updated 2026-10-02).
- University of Florida Jacksonville Physicians, Inc.910 clinicians in the group
Specialties
- Critical Care (Intensivists)primary
- Neurologyalso
Find other Critical Care (Intensivists) doctors in Florida →
Other critical care doctors in Jacksonville
Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053728238 |
| 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