Quick answers
- Where does William Madeira see patients?
- Medicare's clinician data lists 1 practice location in Riverhead, NY. Call before your visit to confirm the address.
- What is William Madeira's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does William Madeira accept Medicare assignment?
- Yes. Medicare's clinician data says William Madeira 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 Madeira?
- (917) 565-5628, as listed in official Medicare / NPI Registry data.
- What is William Madeira's NPI number?
- 1114231214. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William Madeira is enrolled with Medicare (CMS data updated 2026-10-02).
- 21 E 2nd St, Suite 103Riverhead, NY 11901 (917) 565‑5628
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Riverhead
Clinicians with the same Medicare primary specialty in Riverhead, NY — not a recommendation.
Clinician information
| Graduation year | 2000 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1114231214 |
| 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
- 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