Quick answers
- Which hospitals does William E. Sumner Iii work at?
- Medicare's official clinician data lists William E. Sumner Iii at 5 hospitals: Ascension St Vincent's Clay County, Ascension St Vincent's Riverside, Ascension St Vincent's Southside, Ascension St Vincent's St Johns County and Baptist Health Medical Center - Jacksonville. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William E. Sumner Iii see patients?
- Medicare's clinician data lists 1 practice location in Jacksonville, FL. Call before your visit to confirm the address.
- What is William E. Sumner Iii's specialty?
- Medicare lists General Surgery as the primary specialty, and also Surgical Oncology.
- Does William E. Sumner Iii accept Medicare assignment?
- Yes. Medicare's clinician data says William E. Sumner Iii 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 William E. Sumner Iii?
- (904) 389-8861, as listed in official Medicare / NPI Registry data.
- What is William E. Sumner Iii's NPI number?
- 1174531586. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William E. Sumner Iii works
Medicare's Facility Affiliation Data lists William E. Sumner Iii 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 Clay CountyMiddleburg, FL · Acute Care Hospital · CCN 100321
- 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
Practice locations
Addresses where William E. Sumner Iii is enrolled with Medicare (CMS data updated 2026-10-02).
- 2 Shircliff Way, Suite 500Jacksonville, FL 32204 (904) 389‑8861
Group practices
Medicare enrollment lists William E. Sumner Iii as a member of this group (CMS data updated 2026-10-02).
- North Florida Surgeons, PA342 clinicians in the group
Specialties
- General Surgeryprimary
- Surgical Oncologyalso
Other general surgeons in Jacksonville
Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Florida College Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174531586 |
| 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