Quick answers
- Which hospitals does Roy Williams work at?
- Medicare's official clinician data lists Roy Williams at 1 hospital: Mount Sinai Medical Center of Florida, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Roy Williams see patients?
- Medicare's clinician data lists 3 practice locations, including Miami Beach, FL. Call before your visit to confirm the address.
- What is Roy Williams's specialty?
- Medicare lists Cardiac Surgery as the primary specialty, and also Thoracic Surgery.
- Does Roy Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Roy Williams 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 Roy Williams offer telehealth?
- Medicare's clinician data says Roy Williams offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Roy Williams?
- (305) 535-3300, as listed in official Medicare / NPI Registry data.
- What is Roy Williams's NPI number?
- 1679561609. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Roy Williams works
Medicare's Facility Affiliation Data lists Roy Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai Medical Center of Florida, IncMiami Beach, FL · Acute Care Hospital · CCN 100034
Practice locations
Addresses where Roy Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 4302 Alton RdMiami Beach, FL 33140
- 4306 Alton Rd, 2nd FloorMiami Beach, FL 33140
- 4310 Alton Rd, 3rd FloorMiami Beach, FL 33140 (305) 535‑3300
Group practices
Medicare enrollment lists Roy Williams as a member of this group (CMS data updated 2026-10-02).
- Physician Practices of MSMC LLC181 clinicians in the group
Specialties
- Cardiac Surgeryprimary
- Thoracic Surgeryalso
Other cardiac surgeons in Florida
Clinicians with the same Medicare primary specialty in Florida — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1679561609 |
| 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