The Team You Need for the Results You Deserve Kansas City's Leading Medical Malpractice & Serious Personal Injury Firm

undefinedJason P. Osteen

Kansas City Medical Malpractice Lawyer


Mr. Osteen has been with Dempsey & Kingsland, P.C. for more than 10 years. He has a tort litigation practice with an emphasis in the areas of trucking and motor vehicle collisions, medical malpractice, nursing home negligence, premises liability, and vaccine injuries.

Mr. Osteen was born and raised in the Kansas City area. He received his bachelor’s degree with distinction from the University of Kansas, where he was a recipient of the USC Upper Class Scholarship, a merit-based academic scholarship awarded to students after freshman year. Mr. Osteen was also invited to join Phi Beta Kappa, the nation’s oldest and most prestigious academic honor society. He received his Juris Doctorate from the University of Kansas School of Law, where he, as a student, taught a course in appellate advocacy.

Mr. Osteen has successfully tried cases in state and federal court and he has argued before the Supreme Court of Missouri. He has also tried numerous workers’ compensation cases and has achieved multiple permanent total disability awards and settlements that resulted in lifetime financial benefits to his clients.

Mr. Osteen is admitted to practice in Missouri and Kansas state courts, the United States District Courts for Kansas and the Western District of Missouri, and also the United States Court of Claims. He is a member of the Missouri Association of Trial Attorneys and has written amicus briefs on behalf of that organization. He is also a published author in that organization’s journal. Additionally, Mr. Osteen is a member of the American Association for Justice and the Kansas City Metropolitan Bar Association.

Areas of Practice

To get in touch with our firm, please call us at (816) 484-3776.

Client Testimonials

When We Make the Case for Our Clients
They Make the Case For Us
  • “I am unbelievably grateful that we had such an outstanding attorney and staff to support us and help us through this experience!”

    Brittny O

  • “"Wonderful results"”

    Louie Caskey

  • “His firm has excellent service when you are there in the office or over the phone.”

    Erica J.

  • “I would recommend him to anyone seeking an attorney for representation in a medical malpractice case or a personal injury case.”

    Gina R.

  • “Your reputation for being the best was certainly demonstrated throughout this whole process.”

    Kaye H.

  • “Mr. Kingsland and Mr. Akins were able to get me fully compensated for my injuries.”

    Edmund S.

  • “I would recommend him to a friend. A great staff.”

    Stan G.

  • “Thank you Mr. Kingsland for the opportunity to mediate the case yesterday.”

    Thomas V. B.

  • “He does everything within His power to go above the call of duty to ensure your case is handled only in the most professional/productive manner with the your quality life always in the forefront.”

    Christopher P.

  • “I will never hesitate to refer Mr. Kingsland to anyone who is in need of a professional attorney and law firm.”

    John J.

  • “From our initial encounter to the day of settlement, I was extremely impressed by his professionalism.”

    J. Mattonen

  • “I would always recommend Bob to anyone with a serious injury who needed an attorney.”

    Mary A.

  • “Mr. Kingsland and his staff were exceptionally prepared. He removed a major burden from my life.”

    Joseph Z.

  • “Mr. Kingsland’s professionalism was above and beyond what I expected. He is a man of great integrity, compassion and honor…”

    Lawanda R.

  • “I am very grateful.”

    Cindy P.

Why Choose Dempsey & Kingsland

Put Experience on Your Side
  • Proven Record of Success in Cases Like Yours

  • More than 80 Years of Combined Legal Experience

  • Dr. O’Shaughnessy & Cathy Brown RN Work with Us From Start to Finish

  • Accessible Attorneys that are Involved in Each Case

Verdicts & Settlements

Your Victories are Our Victories
  • $43.1 Million Settlement Vaccine leads to Paralysis/Quadriplegia
  • $7,326,934.00 Recovery Vaccine leads to cardiac/respiratory arrest and brain damage
  • $7.25 Million Settlement $7.25 million awarded family of worker who fell to his death from high rise building
  • $7 Million Settlement Breach of Policy Coverage/Bad Faith Claim
  • $5 Million Settlement Truck-Car Fatality Collision
  • $4 Million Settlement Head-on Collision
  • $2.69 Million Combined Settlements Elective Surgery Fraud/Malpractice
  • $2.3 million cumulative settlements Bariatric surgeries
  • $1.85 million settlement Worker Crushed by Forklift While Visiting Industrial Plant
  • $1.83 million recovery Vaccine Leads to Spinal Injury

Our Commitment to Excellence

  • Keenan Trial Institute
  • American Association for Justice
  • MATA - Helping to Balance the Scales of Justice
  • American Board of Trial Advocates
  • Best of the Bar
  • AV Peer Review Rated - AV - Martindale-Hubbell
  • Super Lawyers