About Jonathan A. Kocienda

Jonathan ‘Jak’ Kocienda has been litigating and trying medical malpractice cases for the past 23 of his 27-year legal career in Connecticut and Massachusetts. He is currently manager and lead trial attorney of the Medical Malpractice Division of Claggett, Sykes & Garza, LLC, representing adults and child patients seriously and catastrophically injured by medical negligence. Jak previously made a name for himself as one of the leading medical malpractice attorneys in the state as a co-managing partner and trial attorney in a prestigious medical malpractice defense firm where he represented the interests of Connecticut’s health care providers and institutions. Since then he has brought his extensive knowledge and experience in medical malpractice to his representation of many of Connecticut’s profoundly injured patients. Jak is dedicated to his work and pursuing justice for his clients who were wrongfully injured due to medical negligence. Jak has traveled extensively to lecture on significant issues involving medical malpractice liability and exposure to medical professionals.

 

Awards

Reviews for Jonathan

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Medical Malpractice
Posted by Kimberly
October 06, 2025
Hired Attorney

I can't recommend Jak highly enough. This was an extremely difficult and stressful time for me and Jak always prioritized my feelings first. He took time to understand my case, patiently answered all of my questions, and explained every step of the complex legal process in a way that was easy for me to understand. He always kept me updated and prepared. Jak is incredibly knowledgeable and experienced in medical malpractice. His hard work and dedication led to a very positive outcome for my case and I will forever be grateful.

 
Medical Malpractice
Posted by anonymous
September 26, 2025
Hired Attorney

Attorney Kocienda constantly exceeds my expectations. He is extremely dedicated to his clients, as well as compassionate and determined. He has represented me multiple times (all with successful outcomes), and I have learned so much from him. He has worked tirelessly to ensure that my cases were as strong as possible and has made himself available after hours many times to provide consultation. Attorney Kocienda is very knowledgeable and constantly keeps up with changes in the law and system. He goes above and beyond to learn, educate, reassure, and listen to his clients. I have complete faith in Attorney Kocienda, and I often recommend him to colleagues and friends. He is the best there is!

 
Litigation
Posted by Christy
September 18, 2025
Hired Attorney

Jak oversaw 2 of my father's personal injury cases. He worked diligently throughout the entire process. He was extremely professional and communicative and always called to keep us up to date on where we were in the case process. He was able to win a big award for the first case and is still currently working on the second case.

Medical Malpractice
Posted by Jennifer
September 14, 2025
Hired Attorney

Attorney Kocienda is professional, courteous, incredibly knowledgeable and conscientous. He is thorough, kind, compassionate and an exceptional attorney. He takes the time to really understand the problem and explains things in a simple and understandable way.

Services

Areas of Law

  • Medical Malpractice
  • Personal Injury

Experience

  • Bar Admission & Memberships
    Admissions
    1997, Connecticut
    1998, Massachusetts
    1999, U.S. District Court, District of Connecticut and U.S. Court of Appeals, Second Circuit
    Memberships
    Connecticut and American (Member, Sections on: Insurance
    Litigation) Bar Associations
    Connecticut Italian American Bar Association. Hartford County Bar Association
  • Education & Certifications
    Law School
    University of Connecticut Law School
    Class of 1997
    J.D.
    Other Education
    College of the Holy Cross
    Class of 1994
    B.A.

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Attorneys FAQs

  • What year was this attorney first admitted to the bar?
    Jonathan A. Kocienda was admitted in 1997 to the State of Connecticut.
  • Is this attorney admitted to the bar in more than one state?
    Yes, Jonathan A. Kocienda is admitted to practice in Connecticut and Massachusetts.
  • How many attorneys are in this law firm?
    Claggett, Sykes & Garza, LLC has 6 attorneys at this location.
  • What law school did this attorney attend?
    Jonathan A. Kocienda attended University of Connecticut Law School.