Karen Shanahan Dufour, M.D.
Gastroenterology Physician · Orange, CT
Karen Shanahan Dufour, M.D. is a gastroenterology physician with a practice address in Orange, Connecticut, and NPI 1609859842, issued on Nov 22, 2005. Check the license (Connecticut 028102, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Karen Shanahan Dufour
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 028102 CT
Self-reported in NPPES; status is on the state search - Practice location
- 325 Boston Post RD, Orange, CT 06477
- Phone
- (203) 795-0568
- Enumerated
- Nov 22, 2005
- Record last updated
- Oct 10, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (203) 795-0436
- Medicare enrollment
- Enrolled (PECOS I20060714000138); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 1984
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 336 in Connecticut → Look up another NPI →
Also registered at 325 Boston Post RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Kaminsky, MDInternal Medicine Physician1710924865
Verify Karen Shanahan Dufour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 028102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.7 times the Medicare Part D claims of the average gastroenterology physician in 2024
6,282 Medicare Part D claims for 886 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 19 claims were for opioids.
Most prescribed
- Atorvastatin Calcium539 claims
- Levothyroxine Sodium428 claims
- Amlodipine Besylate264 claims
- Rosuvastatin Calcium260 claims
- Pantoprazole Sodium259 claims
- Losartan Potassium225 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Northeast Medical Group IncOrange, CT
- Rehabilitation Associates IncFairfield, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Shanahan Dufour among 336 gastroenterology physician records in Connecticut
Karen Shanahan Dufour, M.D. is one of 336 gastroenterology physician records with a practice address in Connecticut. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1984 · median 2001 among the 255 with a school on file
- Record last updated2013 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Connecticut
There are 336 gastroenterology physician records in Connecticut.
All 336 in Connecticut → Every provider in Orange → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Prakash Huded, MDPortland, CT 064801760467237
- Taneisha Grant, M.D.North Haven, CT 064731457534828
- Heather Nisbeth, M.D.Southbury, CT 064881912952243
- Anant Agarwalla, M.D.Wallingford, CT 064921326458589
- Edmund Chung, MDMiddletown, CT 064571306804323
- Lucian Gorgan, MDMiddletown, CT 064571619906542
- Nadeem Hussain, MDMiddletown, CT 064571548228596
- Gregor Koobatian, MDMiddletown, CT 064571609833730
Common questions
What is Karen Shanahan Dufour, M.D.'s NPI number?
Karen Shanahan Dufour, M.D.'s National Provider Identifier (NPI) is 1609859842, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Karen Shanahan Dufour, M.D. located?
The NPPES record lists a practice address at 325 Boston Post RD, Orange, CT, 06477. Phone: (203) 795-0568. Providers update this record themselves, so call before visiting.
How can I verify Karen Shanahan Dufour, M.D.'s license?
NPPES lists Connecticut license number 028102, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Shanahan Dufour, M.D. prescribe under Medicare Part D?
In 2024, Karen Shanahan Dufour, M.D. had 6,282 Medicare Part D claims for 886 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Karen Shanahan Dufour, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.