Quick answers
- Which hospitals does Keith O. Obrien work at?
- Medicare's official clinician data lists Keith O. Obrien at 1 hospital: HCA Florida Aventura Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Keith O. Obrien see patients?
- Medicare's clinician data lists 3 practice locations, including Miami Beach, FL, Aventura, FL and Lake City, FL. Call before your visit to confirm the address.
- What is Keith O. Obrien's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Keith O. Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says Keith O. Obrien 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 Keith O. Obrien?
- (305) 344-2273, as listed in official Medicare / NPI Registry data.
- What is Keith O. Obrien's NPI number?
- 1124024625. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Keith O. Obrien works
Medicare's Facility Affiliation Data lists Keith O. Obrien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HCA Florida Aventura HospitalAventura, FL · Acute Care Hospital · CCN 100131
Practice locations
Addresses where Keith O. Obrien is enrolled with Medicare (CMS data updated 2026-10-02).
- 1329 Alton RdMiami Beach, FL 33139 (305) 344‑2273
- 20900 Biscayne BlvdAventura, FL 33180 (305) 682‑7000
- 340 NW Commerce Dr, Lake City Medical CenterLake City, FL 32055 (850) 719‑9000
Group practices
Medicare enrollment lists Keith O. Obrien as a member of these groups (CMS data updated 2026-10-02).
- Hospital Medicine Services of Fl, LLC507 clinicians in the group
- Miami Beach Urgent Care4 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Miami Beach
Clinicians with the same Medicare primary specialty in Miami Beach, FL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Morehouse School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124024625 |
| 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