Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Duncan Joseph Flynn, MD

Individual provider Internal Medicine Physician · NPI 1265991392

Duncan Joseph Flynn, MD is a Gastroenterology in Biddeford, Maine. Qualified in 2019, 7 years ago. Practices with Mainehealth, a 2,615-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
7
Licensed in
ME
In the registry since
2019
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9 Healthcare Dr Ste 202
Biddeford, ME 04005-9450
Phone: (207) 283-1427
Fax: (207) 294-3554
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 22 Bramhall St, Portland, ME 04102-3134 — (207) 662-2273

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD29047 (ME)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD29047 (ME)
Hepatology Physician Taxonomy 207RI0008X · Licence MD29047 (ME)

Record details

NPI number1265991392
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 18, 2019
Last updated in NPPESJuly 24, 2025
Certification dateJuly 24, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Biddeford