Atty. Mark D. Samson
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.
Medical Malpractice Law - Plaintiffs & More Attorney · Serving Phoenix, AZ · 40+ Years Experience
Profile Summary
About Mark D. Samson at a Glance
Mark D. Samson is a medical malpractice, personal injury, and product liability attorney based in Phoenix, Arizona, practicing at Keller Rohrback LLP. They have 40+ years of legal experience, licensed to practice since 1986. Admitted to practice in Arizona, State Bar of Arizona (1986) and District of Columbia, The District of Columbia Bar (2008). Educated at Arizona State University (J.D., 1986). Recognitions include Best Lawyers in America — Medical Malpractice Law - Plaintiffs (2026), Best Lawyers in America — Personal Injury Litigation - Plaintiffs (2026), and Best Lawyers in America — Product Liability Litigation - Plaintiffs (2026). Serves clients in Phoenix, AZ and the surrounding metropolitan area.
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About Mark D. Samson
- 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
Practice Areas Explained
Mark D. Samson's Areas of Legal Practice
Each practice area below reflects the types of cases Mark D. Samson handles, with a practical overview of what that area of law involves and how it may apply to your situation in Phoenix.
Medical Malpractice in Phoenix
Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.
Mark D. Samson is one of 48,593 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Arizona →
Personal Injury in Phoenix
Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.
Mark D. Samson is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in Arizona →
Product Liability in Phoenix
Mark D. Samson is one of 65,610 product liability attorneys indexed nationally. Browse product liability attorneys in Arizona →
Jurisdictional Context
Why Local Counsel Matters in Phoenix
Practicing law in Arizona. Legal matters in Arizona are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Phoenix are typically filed in the local municipal court or the appropriate Arizona state district court, depending on subject matter and amount in controversy. An attorney licensed in Arizona brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Arizona courts without local counsel or pro hac vice admission.
Phoenix Courts and Legal Process
Choosing a Phoenix-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.
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Professional Profile
Why Clients in Phoenix Choose Mark D. Samson
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark D. Samson's practice in the field of medical malpractice, personal injury, and product liability.
Decade-Tested Legal Experience
Mark D. Samson brings 40+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Arizona, State Bar of Arizona and District of Columbia, The District of Columbia Bar, Mark D. Samson can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering medical malpractice, personal injury, and product liability, Mark D. Samson can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Phoenix
A Phoenix-based practice means Mark D. Samson attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Mark D. Samson Handles in Phoenix
Below is a representative sample of the types of matters Mark D. Samson has experience with under Arizona law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Mark D. Samson directly to discuss the specifics of your situation.
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How People Find Mark D. Samson Online
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Mark D. Samson's Practice Areas & Specializations
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