Mark D. Samson

Phoenix, AZ Directions

Recognized in Best Lawyers since 2022

Awarded Practice Areas

Medical Malpractice Law - Plaintiffs Personal Injury Litigation - Plaintiffs Product Liability Litigation - Plaintiffs

Awarded Practice Areas

Medical Malpractice Law - Plaintiffs Personal Injury Litigation - Plaintiffs Product Liability Litigation - Plaintiffs

Works at

Keller Rohrback LLP

25 Best Lawyers awards

Biography

As a licensed veterinarian, Mark has the medical knowledge to help his clients get the results they deserve.

Given his strong medical science background, Mark's practice focuses on tort law, including medical negligence, product liability, and other significant personal injury cases. He has nearly 35 years of experience litigating medical malpractice cases with victories including the landmark Edwards verdict and a transfusion-associated AIDS case that remains one of the largest personal injury verdicts in Arizona history. Mark was born in New York, but he moved to the Phoenix area in 1959 and grew up there. He practiced from 1986 to 1995 at Meyer, Hendricks, Victor, Osborn & Maledon, becoming a member in 1992. In 1995, Mark formed Dalton Gotto Samson & Kilgard, P.L.C. ("DGSK") and was one of the members of DGSK who formed Keller Rohrback P.L.C. in 2002.

Locations

Phoenix, Arizona

602-248-0088

3101 North Central Avenue, Suite 1400
Phoenix, AZ 85012

Education

Arizona State University, J.D., graduated 1986

Bar Admissions

District of Columbia, The District of Columbia Bar, 2008
Arizona, State Bar of Arizona, 1986

Client Testimonials

Attorney Mark Samson at Keller Rohrback and his staff demonstrated nothing but professionalism and diligence in every aspect of my case. They were meticulous in examining the case, explaining all the processes, and walking us through each stage. Aside from their professional duties, Mark and his staff showed compassion and always took the time to listen to our experiences and ensured this was presented. Despite the length of the case, we are grateful for the time that Mark Samson and the Keller Rohrback staff dedicated to getting us a fair resolution.

Awards & Focus

Recognized in The Best Lawyers in America^® 2026 for work in:

Medical Malpractice Law - Plaintiffs
Personal Injury Litigation - Plaintiffs
Product Liability Litigation - Plaintiffs

Additional Information

Articles & Presentations

Chairman, Maricopa County Bar Association, Seminar on Anatomy, 1994.

Speaker, National Meeting of American Veterinary Medical Law Association, Tort and regulatory issues affecting veterinarians,1995.

Chair, Maricopa County Bar Association, Seminar on Medical Malpractice in the Ages of Disclosure.

Speaker, Arizona Trial Lawyers Association Medical Malpractice Seminar, Use of medical literature in the courtroom, 1996.

Speaker, Arizona Trial Lawyers Association Medical Malpractice Seminar, New legal theories in medical malpractice, 1999.

Co-Chair, Arizona Trial Lawyers Association, Anatomy of Pain, 2002.

Speaker, Arizona Veterinary Medical Association, Application of legal principles to veterinary medicine, 1999-2003.

Speaker, Arizona Paralegal Association, Settlement conferences versus trial in medical malpractice cases, 2002.

Speaker, Arizona Paralegal Association, Changes and issues in Arizona's ethical rules for attorneys, 2003.

Maricopa County Bar Association, Punitive Damages after Campbell v. State Farm, May 2003.

Chairman, Arizona State Bar, New Ethical Rules in Arizona, Oct. 2003.

Maricopa County Bar Association, Liens Again, 2004.

Maricopa County Bar Association, Arizona Appellate Update, 2005.

Co-Chairman, Arizona Trial Lawyers Association, Liens, Jan. 2006.

Blackwell's 5-Minute Veterinary Manager, Negotiation, 2006.

Chairman, Arizona Trial Lawyers Association, Rapid Fire on Litigation Issues, Oct. 2006.

Co-Chairman, Arizona Trial Lawyers Association, Trial Practice - Damages, 2007.

Arizona Trial Lawyers Association, Issues in FTCA Claims, 2008.

Arizona Trial Lawyers Association, Loss of a Chance in Med Mal Cases, 2008.

Arizona State Bar, Comparing Veterinary and Legal Ethics, 2009.

Arizona Trial Lawyers Association, Trial Masters: A Look Inside the Value Options Case & Tools for Difficult Cases, 2011.

Arizona Trial Lawyers Association, Medical Malpractice Seminar, 2013.

Arizona Trial Lawyers Association, From the Heart: Letting Go in Front of the Jury, 2015.

Arizona Paralegal Association, Health Law – Medical Malpractice in Today’s World, 2016.

Arizona State University College of Law, Health Law and Policy, 2016.

Maricopa County Association of Paralegals, Personal Injury Law in Arizona, 2018.

American Veterinary Medical Law Association, The Lawyer’s Role in Meeting 21st Century Changes in Veterinary Medicine, 2018.

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