Kenneth A. Litwin, M.D.
Internal Medicine Physician · Sandy Hook, CT
Kenneth A. Litwin, M.D. is an internal medicine physician with a practice address in Sandy Hook, Connecticut, and NPI 1073570842, issued on Apr 27, 2006. Check the license (Connecticut 037343, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Kenneth A. Litwin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 037343 CT
Self-reported in NPPES; status is on the state search - Practice location
- 27 Glen RD, Sandy Hook, CT 06482
- Phone
- (203) 304-9502
- Enumerated
- Apr 27, 2006
- Record last updated
- Jul 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (203) 304-9503
- Medicaid ID
- 001373430 CT
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kenneth A. Litwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 037343Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
23 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Kenneth A. Litwin among 2,623 internal medicine physician records in Connecticut
Kenneth A. Litwin, 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 fileNo · 63% of these records are
- Record last updated2020 · 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).
2 internal medicine physician records list a practice address in Sandy Hook
They are 2 of the 127 NPPES records with a practice address in Sandy Hook, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Sandy Hook → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jesse Cohen, MDSandy Hook, CT 064821568725273
- Bardia Asgari, MDShelton, CT 064841811938533
- Ana Graciela Azueta-Jimenez, MDShelton, CT 064841083293518
- Piotr Baginski, MDShelton, CT 064841164449906
- Nami Bayan, MDShelton, CT 064841760413538
- Nelson Chao, M.D.Shelton, CT 064841619974896
- John Farens, MDShelton, CT 064841427133354
- Shaun Najarian, DOShelton, CT 064841568824589
Common questions
What is Kenneth A. Litwin, M.D.'s NPI number?
Kenneth A. Litwin, M.D.'s National Provider Identifier (NPI) is 1073570842, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth A. Litwin, M.D. located?
The NPPES record lists a practice address at 27 Glen RD, Sandy Hook, CT, 06482. Phone: (203) 304-9502. Providers update this record themselves, so call before visiting.
How can I verify Kenneth A. Litwin, M.D.'s license?
NPPES lists Connecticut license number 037343, 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 Kenneth A. Litwin, M.D. prescribe under Medicare Part D?
In 2024, Kenneth A. Litwin, M.D. had 23 Medicare Part D claims; 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.