Katherine Flanagan, MD
Internal Medicine Physician · Norwich, CT
Katherine Flanagan, MD is an internal medicine physician with a practice address in Norwich, Connecticut, and NPI 1407968639, issued on Sep 1, 2006. Check the license (Connecticut 1389477, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Flanagan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 1389477 CT
38947 CT
Self-reported in NPPES; status is on the state search - Practice location
- 326 Washington St, Norwich, CT 06360
- Phone
- (860) 889-8331
- Enumerated
- Sep 1, 2006
- Record last updated
- May 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090112000087); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 326 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Flanagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 1389477Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
493 Medicare Part D claims for 186 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Pantoprazole Sodium36 claims
- Atorvastatin Calcium32 claims
- Furosemide22 claims
- Clopidogrel20 claims
- Amoxicillin-Clavulanate Potass18 claims
- Metoprolol Succinate17 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.
2 hospitals and group practices
- Middlesex HospitalMiddletown, CT · Acute Care Hospitals3 of 5 stars
- Silver Spring Health Care Management IncWakefield, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Katherine Flanagan among 2,623 internal medicine physician records in Connecticut
Katherine Flanagan, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1989 · median 2004 among the 1,646 with a school on file
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 internal medicine physician records list a practice address in Norwich
They are 35 of the 1,431 NPPES records with a practice address in Norwich, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Norwich → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jan Akus, M.D.Norwich, CT 063601568462760
- Terry Baksh, M.D.Norwich, CT 063601710962428
- Jacqueline Cameron, M.D.Norwich, CT 063601447271432
- Steven Curland, MDNorwich, CT 063601609982560
- Paul Deutsch, MD, RPHNorwich, CT 063601811990013
- Liliana Galan, M.D.Norwich, CT 063601629068598
- Christin Homiski, MDNorwich, CT 063601851359210
- Hanna Kackielo, MDNorwich, CT 063601598714701
Common questions
What is Katherine Flanagan, MD's NPI number?
Katherine Flanagan, MD's National Provider Identifier (NPI) is 1407968639, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Flanagan, MD located?
The NPPES record lists a practice address at 326 Washington St, Norwich, CT, 06360. Phone: (860) 889-8331. Providers update this record themselves, so call before visiting.
How can I verify Katherine Flanagan, MD's license?
NPPES lists Connecticut license number 1389477, 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 Katherine Flanagan, MD prescribe under Medicare Part D?
In 2024, Katherine Flanagan, MD had 493 Medicare Part D claims for 186 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.