Quick answers
- Which hospitals does William B. Smithy work at?
- Medicare's official clinician data lists William B. Smithy at 1 hospital: Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William B. Smithy see patients?
- Medicare's clinician data lists 1 practice location in Hampton Bays, NY. Call before your visit to confirm the address.
- What is William B. Smithy's specialty?
- Medicare lists Colorectal Surgery (Proctology) as the primary specialty, and also General Surgery.
- Does William B. Smithy accept Medicare assignment?
- Yes. Medicare's clinician data says William B. Smithy 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 B. Smithy?
- (631) 723-5000, as listed in official Medicare / NPI Registry data.
- What is William B. Smithy's NPI number?
- 1235158155. 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 B. Smithy works
Medicare's Facility Affiliation Data lists William B. Smithy at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where William B. Smithy is enrolled with Medicare (CMS data updated 2026-10-02).
- 255 W Montauk Hwy, Life Care CtrHampton Bays, NY 11946 (631) 723‑5000
Group practices
Medicare enrollment lists William B. Smithy as a member of this group (CMS data updated 2026-10-02).
- Stony Brook Surgical Associates University Faculty Practice Corporati109 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in New York →
Other colorectal surgeons in Hampton Bays
Clinicians with the same Medicare primary specialty in Hampton Bays, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235158155 |
| 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