Quick answers
- Does William Doan Nguyen accept Medicare assignment?
- Medicare's clinician data says William Doan Nguyen may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is William Doan Nguyen's NPI number?
- 1689564486. 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 Doan Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 33 W 42nd StNew York, NY 10036 (212) 938‑4001
Group practices
Medicare enrollment lists William Doan Nguyen as a member of this group (CMS data updated October 2, 2026).
- State of New York Comptrollers Office170 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in State of New York Comptrollers Office
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York - State College Optometry |
| Graduation year | 2025 (1 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1689564486 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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