Quick answers
- Where does Eric P. Sun see patients?
- Medicare's clinician data lists 5 practice locations, including Portland, ME, Greenwich, CT and New Haven, CT. Call before your visit to confirm the address.
- What is Eric P. Sun's specialty?
- Medicare lists Pediatric Medicine as the primary specialty, and also Internal Medicine.
- Does Eric P. Sun accept Medicare assignment?
- Medicare's clinician data says Eric P. Sun may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Eric P. Sun's NPI number?
- 1255905782. 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 Eric P. Sun is enrolled with Medicare (CMS data updated 2026-10-02).
Specialties
- Pediatric Medicineprimary
- Internal Medicinealso
Other pediatricians in Portland
Clinicians with the same Medicare primary specialty in Portland, ME — not a recommendation.
Clinician information
| Medical school | Columbia University College Of Physicians And Surgeons |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1255905782 |
| 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