Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Leonid Karkanitsa, MD

Individual provider Internal Medicine Physician · NPI 1669435087

Leonid Karkanitsa, MD practises Internal Medicine in Stratford, Connecticut. Qualified in 1985, 41 years ago. Works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
41
Licensed in
CT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

6580 Main St Fl 1
Stratford, CT 06614
Phone: (203) 377-5444
Fax: (203) 377-5540
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1952 Whitney Ave, Hamden, CT 06517-1209 — (203) 848-1083
  • 6580 Main St Fl 1, Stratford, CT 06614-1607 — (203) 377-5444

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 043534 (CT)

Record details

NPI number1669435087
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 7, 2006
Last updated in NPPESJuly 24, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients177
Services billed 798 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $773 27 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Bridgeport Hospital Hospital · Bridgeport, CT
  • Constellation Home Care Hospice · Norwalk, CT · listed as Constellation Home Care LLC
  • Hartford Healthcare At Home Hospice · East Hartford, CT · listed as Hartford Healthcare at Home, Inc
  • Civita Care Center At West River Nursing home · Milford, CT · listed as Senior Philanthropy of Milford O LLC
  • Lord Chamberlain Manor Nursing & Rehabilitation Ce Nursing home · Stratford, CT
  • Lord Chamberlain Nursing & Rehabilitation Center Nursing home · Stratford, CT

Other providers in Stratford