DUNCAN JOSEPH FLYNN MD
NPI 1265991392
Internal Medicine - Gastroenterology in Biddeford, ME

Active since March 18, 2019PECOS EnrolledAccepts Medicare Assignment
9 HEALTHCARE DR STE 202, BIDDEFORD, ME 04005(207) 283-1427(207) 294-3554 Get Directions Write a Review

NPPES record last updated: July 24, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 31, 2025, Mar 18, 2019 (2 updates tracked since 2019).

About Duncan Joseph Flynn Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DUNCAN JOSEPH FLYNN MD (NPI 1265991392) is an individual gastroenterology provider in Biddeford, Maine, licensed in Maine (MD29047) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains a secondary practice location in Portland.

NPPES Registry Identity

NPI1265991392
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDUNCAN JOSEPH FLYNNCredential: MD
Location Address9 HEALTHCARE DR STE 202Biddeford, ME 04005-9450
Mailing Address9 Healthcare Dr Ste 202Biddeford, ME 04005-9450 · (207) 283-1427 · Fax (207) 294-3554
Fax(207) 294-3554
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMarch 18, 2019
Last NPPES UpdateJuly 24, 20252 updates tracked since enumeration
NPPES CertifiedJuly 24, 2025
NPI 1265991392 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in ME · MD29047
Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License MD29047 (ME)
Also ListedInternal Medicine · HepatologyTaxonomy 207RI0008X · License MD29047 (ME)
9 HEALTHCARE DR STE 202, Biddeford, ME 04005

Secondary Practice Location 1

Location 122 Bramhall StPortland, ME 04102-3134 · Phone (207) 662-2273 · Fax (207) 662-6038

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Duncan Joseph Flynn Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1456680420
PECOS Enrollment IDI20250612003257
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Maine Medical Center

Acute Care Hospitals · Portland, ME
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200009
Location22 Bramhall StPortland, ME 04102 · Cumberland County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04005 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.83 typical visit price
range $56.28 – $169.96
Typical copayment $32.20 (range $14.07 – $42.49)
Most-billed visit code 99204
Established Patient
$99.18 typical visit price
range $18.22 – $138.92
Typical copayment $24.79 (range $4.55 – $34.73)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Gastroenterology)
9 HEALTHCARE DR STE 202
BIDDEFORD, ME 04005
Physician Assistant (Medical)
9 HEALTHCARE DR STE 202
BIDDEFORD, ME 04005
Nurse Practitioner
9 HEALTHCARE DR STE 202
BIDDEFORD, ME 04005
Internal Medicine (Gastroenterology)
9 HEALTHCARE DR STE 202
BIDDEFORD, ME 04005
Internal Medicine (Gastroenterology)
9 HEALTHCARE DR STE 202
BIDDEFORD, ME 04005
Physician Assistant
9 HEALTHCARE DR STE 202
BIDDEFORD, ME 04005

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Duncan Flynn's NPI number?

The NPI number for Duncan Flynn is 1265991392. It was assigned to this individual provider in the NPPES registry on March 18, 2019.

Where is Duncan Flynn located?

Duncan Flynn practices at 9 Healthcare Dr Ste 202, Biddeford, ME 04005. The listed phone number is (207) 283-1427.

What is Duncan Flynn's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Duncan Flynn enrolled in Medicare?

Yes. Duncan Flynn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Duncan Flynn accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Duncan Flynn as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Duncan Flynn affiliated with any hospitals?

According to CMS data, Duncan Flynn is affiliated with Maine Medical Center.

When was this NPI record last updated?

The NPPES record for Duncan Flynn was last updated on July 24, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.