Jeffrey Mark Kagan, M.D.
Internal Medicine Physician · Newington, CT
Jeffrey Mark Kagan, M.D. is an internal medicine physician with a practice address in Newington, Connecticut, and NPI 1003886193, issued on Jan 23, 2006. Check the license (Connecticut 030937, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Mark Kagan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 030937 CT
Self-reported in NPPES; status is on the state search - Practice location
- 365 Willard Ave, Newington, CT 06111
- Phone
- (860) 665-1571
- Enumerated
- Jan 23, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (860) 667-3668
- Medicaid ID
- 001309378 CT
- Medicare enrollment
- Enrolled (PECOS I20100212000391); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 365 Willard Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jeffrey Mark Kagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 030937Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.8 times the Medicare Part D claims of the average internal medicine physician in 2024
24,631 Medicare Part D claims for 879 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 164 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,734 claims
- Levothyroxine Sodium873 claims
- Amlodipine Besylate860 claims
- Lisinopril833 claims
- Pantoprazole Sodium751 claims
- Tamsulosin Hcl706 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 practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $560.57
5 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Hartford Healthcare Medical Group Specialists PLLCStorrs, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey Mark Kagan among 2,623 internal medicine physician records in Connecticut
Jeffrey Mark Kagan, M.D. 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
- Graduated1988 · median 2004 among the 1,646 with a school on file
- Record last updated2007 · 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).
28 internal medicine physician records list a practice address in Newington
They are 28 of the 722 NPPES records with a practice address in Newington, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Newington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sanjay Barochia, M.D.Newington, CT 061111972520914
- Nadine Cartwright-Lowe, M.D.Newington, CT 061111760484513
- Patricia Cioffi, MDNewington, CT 061111720020597
- Eugene Constantinou, MDNewington, CT 061111265434526
- Donald Curran, M.D.Newington, CT 061111033111356
- Robert Dorman, M.D.Newington, CT 061111952326472
- Tatong Hemmaplardh, M.D.Newington, CT 061111669419552
- Shahnaz Hussain, M.D.Newington, CT 061111073519658
Common questions
What is Jeffrey Mark Kagan, M.D.'s NPI number?
Jeffrey Mark Kagan, M.D.'s National Provider Identifier (NPI) is 1003886193, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Mark Kagan, M.D. located?
The NPPES record lists a practice address at 365 Willard Ave, Newington, CT, 06111. Phone: (860) 665-1571. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Mark Kagan, M.D.'s license?
NPPES lists Connecticut license number 030937, 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 Jeffrey Mark Kagan, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey Mark Kagan, M.D. had 24,631 Medicare Part D claims for 879 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Jeffrey Mark Kagan, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.5 of 100, reported for the practice group. 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.