Mark D. Samson

Top rated Medical Malpractice attorney in Phoenix, Arizona

Keller Rohrback L.L.P.
Mark D. Samson
Keller Rohrback L.L.P.

Practice Areas: Medical Malpractice, Class Action & Mass Torts, Products Liability view more

Licensed in Arizona since: 1986

Education: Arizona State University Sandra Day O'Connor College of Law

Selected to Super Lawyers: 2008 - 2020

Keller Rohrback L.L.P.

3101 North Central Avenue
Suite 1400
Phoenix, AZ 85012 Phone: 602-230-6323 Email: Mark D. Samson Visit website


As a licensed veterinarian, Mark has the medical knowledge that helps get his clients 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 30 years of experience litigating medical malpractice cases with victories including the landmark Edwards verdict, a transfusion-associated AIDS case which 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.

Practice areas

Personal Injury - Medical Malpractice: Plaintiff, Class Action/Mass Torts: Plaintiff, Personal Injury - Products: Plaintiff, Consumer Law

First Admitted: 1986, Arizona

Professional Webpage:

Special Licenses/Certifications:
  • Arizona Association for Justice
  • Doctor of Veterinary Medicine, 1980
Bar/Professional Activity:
  • Arizona State Bar Association
  • Maricopa County Bar Association
  • Washington D.C., 2008
  • American Association for Justice
Educational Background:
  • Washington State University College of Veterinary Medicine – D.V.M., summa cum laude, 1980 , 1980
  • Arizona State University College of Law – J.D., summa cum laude, 1986, Order of the Coif, 1986
  • Arizona State University – B.S., summa cum laude, 1976, Bio-Ag Sciences , 1976
  • Washington State University College of Veterinary Medicine – M.S., 1983, Veterinary Anatomy , 1983
Scholarly Lectures/Writings:
  • Rapid Fire on Litigation Issues, October, Chairman, Arizona Trial Lawyers Association, 2006
  • As lawyers that primarily take the plaintiffs’ side of legal matters, my firm sees a vast range of 21st century changes that can or will affect individual veterinarians and/or their practices in a host of ways. They range from:- Internet commerce issues- Data breach issues- Organizational form issues (corporate, LLC, or other)- Minimum wage effects on labor- Contractual retention of other veterinarians- Other economic pressuresAll of those will need to be addressed in the coming years, but for most veterinarians, they will fall under the “business” rather than the legal heading and not develop into litigation, which is what this presentation discussed., The Lawyer’s Role in Meeting 21st Century Changes in Veterinary Medicine, American Veterinary Medical Law Association, 2018
  • Trial Practice – Damages, Co-Chairman, Arizona Trial Lawyers Association, 2006
  • Issues in FTCA Claims, Author, Arizona Trial Lawyers Association, 2008
  • Loss of a Chance in Med Mal Cases, Author, Arizona Trial Lawyers Association, 2008

Office location for Mark D. Samson

3101 North Central Avenue
Suite 1400
Phoenix, AZ 85012


13 Years Super Lawyers
  • Super Lawyers: 2008 - 2020

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