Leonid Karkanitsa, MD
Internal Medicine Physician · Stratford, CT
Leonid Karkanitsa, MD is an internal medicine physician with a practice address in Stratford, Connecticut, and NPI 1669435087, issued on Apr 7, 2006. Check the license (Connecticut 043534, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Leonid Karkanitsa
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 043534 CT
Self-reported in NPPES; status is on the state search - Practice location
- 6580 Main St FL 1, Stratford, CT 06614
- Phone
- (203) 377-5444
- Enumerated
- Apr 7, 2006
- Record last updated
- Jul 24, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (203) 377-5540
- Medicaid ID
- 004256302 CT
- Medicare enrollment
- Enrolled (PECOS I20050823000548); 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 →
Verify Leonid Karkanitsa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 043534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,431 Medicare Part D claims for 320 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 95 claims were for opioids.
Most prescribed
- Amlodipine Besylate409 claims
- Atorvastatin Calcium336 claims
- Levothyroxine Sodium312 claims
- Trazodone Hcl301 claims
- Rosuvastatin Calcium289 claims
- Eliquis263 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.
Industry payments in 2024: $983.11
30 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Leonid Karkanitsa among 2,623 internal medicine physician records in Connecticut
Leonid Karkanitsa, 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
- Graduated1985 · median 2004 among the 1,646 with a school on file
- Record last updated2018 · 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).
14 internal medicine physician records list a practice address in Stratford
They are 14 of the 645 NPPES records with a practice address in Stratford, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Stratford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Charles Bruce-Tagoe, MDStratford, CT 066141417122946
- David Chess, M.D.Stratford, CT 066141376521773
- Lucia Chou, M.D.Stratford, CT 066141114986130
- Veronica Fernandes, MDStratford, CT 066141376706333
- John Kirkland, M.D.Stratford, CT 066141144289513
- Bobby Malik, MDStratford, CT 066141396804712
- Barry Melton, MDStratford, CT 066141255380267
- Diana Morocz, MDStratford, CT 066141184673188
Common questions
What is Leonid Karkanitsa, MD's NPI number?
Leonid Karkanitsa, MD's National Provider Identifier (NPI) is 1669435087, issued on Apr 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonid Karkanitsa, MD located?
The NPPES record lists a practice address at 6580 Main St FL 1, Stratford, CT, 06614. Phone: (203) 377-5444. Providers update this record themselves, so call before visiting.
How can I verify Leonid Karkanitsa, MD's license?
NPPES lists Connecticut license number 043534, 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 Leonid Karkanitsa, MD prescribe under Medicare Part D?
In 2024, Leonid Karkanitsa, MD had 8,431 Medicare Part D claims for 320 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.