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Louis M. Diesel

Attorney Profile

Top Rated Personal Injury Attorney in Flagstaff, AZ

AWD Law - Aspey, Watkins & Diesel PLLC
123 North San Francisco Street, Suite 300
Flagstaff, AZ 86001
Phone: 928-774-1478
Fax: 928-774-8404
Selected to Super Lawyers: 2007
Licensed in Arizona Since: 1973
Practice Areas: Personal Injury - General: Plaintiff
  • Virtual Appointments
Attorney Profile

As a partner at Aspey, Watkins, & Diesel, Attorneys-at-Law, P.L.L.C., Louis M. Diesel serves clients across Arizona. He focuses his practice on plaintiff's personal injury litigation, ranging from motor vehicle accidents to workplace injuries and premises liability, including serious slip-and-fall incidents. He also handles medical malpractice claims and wrongful death litigation.

Mr. Diesel earned his Bachelor of Science with high distinction from Northern Arizona University in 1970. He went on to receive his Juris Doctor in 1973 from what was then known as the Arizona State University College of Law. He additionally earned a Master of Science in 1975 from Arizona State University. While in law school, he worked on the Arizona State Law Journal.

Mr. Diesel became licensed to practice law in the state of Arizona in 1973. He is additionally admitted to practice before the U.S. District Court for the District of Arizona, the U.S. Court of Appeals for the 9th Circuit and the Supreme Court of the United States.

In order to remain up-to-date with current developments in his practices, Mr. Diesel is an active participant in numerous legal organizations. He is a member of the American Bar Association, the Arizona Association for Justice, the Coconino County Bar Association, and the American Association for Justice. He is also a founding fellow of the Arizona Bar Foundation. He is a co-author of the Arizona Motor Vehicle Accident Deskbook and has also lectured across the state regarding personal injury litigation. Recognized for his ethics and skill, Mr. Diesel has earned the rating of AV Preeminent* from his peers through Martindale-Hubbell.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards.

About Louis M. Diesel

First Admitted: 1973, Arizona

Professional Webpage:


  • Martindale Hubbell® AV® PreeminentTM
  • Super Lawyers®, 2007
  • Arizona’s Finest Lawyers, Sustaining Member

Scholarly Lectures/Writings

  • Co-Author, Arizona Motor Vehicle Accident Deskbook

Pro bono/Community Service

  • Arizona Bar Foundation, Founding Fellow

Educational Background

  • Northern Arizona University, Flagstaff, Arizona, B.S., with High Distinction (top 5%), 1970
  • Arizona State University, Tempe, Arizona, M.S., 1975

Bar/Professional Activity

  • Supreme Court of Arizona, 1973
  • U.S. Supreme Court, 1978
  • Arizona Trial Lawyers Association, Member
  • U.S. Court of Appeals – Ninth Circuit, 1974
  • American Bar Association, Member
  • State Bar of Arizona
  • U.S. District Court – District of Arizona, 1973
  • Coconino County Bar Association, Member
  • American Association for Justice, Member
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Office Location for Louis M. Diesel

123 North San Francisco Street
Suite 300
Flagstaff, AZ 86001

Last Updated: 12/18/2020

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