Quick answers
- Where does John W. Duncan see patients?
- Medicare's clinician data lists 3 practice locations, including Port Washington, NY, Lindenhurst, NY and New York, NY. Call before your visit to confirm the address.
- What is John W. Duncan's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does John W. Duncan accept Medicare assignment?
- Yes. Medicare's clinician data says John W. Duncan 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 John W. Duncan?
- (754) 206-6226, as listed in official Medicare / NPI Registry data.
- What is John W. Duncan's NPI number?
- 1437426483. 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 John W. Duncan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Temple DrPort Washington, NY 11050 (754) 206‑6226
- 150 Sunrise Hwy, Suite ELindenhurst, NY 11757 (631) 225‑7200
- 170 E 77th St, Lowr LevelNew York, NY 10075 (212) 369‑9200
Group practices
Medicare enrollment lists John W. Duncan as a member of these groups (CMS data updated 2026-10-02).
- Smi Imaging LLC384 clinicians in the group
- Elite Imaging LLC127 clinicians in the group
- Zwanger and Pesiri Radiology Group LLP93 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437426483 |
| 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