Quick answers
- Does Duncan J. Flynn accept Medicare assignment?
- Yes. Medicare's clinician data says Duncan J. Flynn accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Duncan J. Flynn's NPI number?
- 1265991392. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Duncan J. Flynn works
Medicare's Facility Affiliation Data lists Duncan J. Flynn at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Cary Medical CenterCaribou, ME · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 200031
- MaineHealth Maine Medical CenterPortland, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200009
- MaineHealth Pen Bay HospitalRockport, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200063
Practice locations
Addresses where Duncan J. Flynn is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Medical Ctr DrBiddeford, ME 04005
- 22 Bramhall StPortland, ME 04102
- 74 Access HwyCaribou, ME 04736 (207) 498‑2350
- 9 Healthcare DrBiddeford, ME 04005 (207) 283‑0998
Group practices
Medicare enrollment lists Duncan J. Flynn as a member of these groups (CMS data updated October 2, 2026).
- MaineHealth2,633 clinicians in the group
- Pines Health Services56 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Biddeford
Clinicians with the same Medicare primary specialty in Biddeford, ME — not a recommendation.
Other clinicians in MaineHealth
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1265991392 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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