Judge Mary Celeste (Ret.) | Expert Witness | Denver, CO
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Judge Mary Celeste (Ret.) | Denver, CO Facebook Twitter LinkedIn 2016 Best Legal Blog Nominee home bg header judge mary celeste Judge Mary Celeste (Ret.) Judge Mary Celeste (Ret.) Judge Mary Celeste (Ret.)

Judge Celeste (Ret.) offers a number of services as an educator, speaker, consultant and trainer. She complies with government funding requirements and has been approved for CLE, CEU, CMU credits across the country.  You can request more information by calling or emailing us. See or review our list of past presentations.

Speaker, Educator and Consultant

Impaired Driving, Marijuana and Drugged Driving

"Judge Mary Celeste is extremely knowledgeable in many areas of substance-impaired driving. I’ve had the pleasure of working with her on multiple occasions and each experience has been delightful. Whether we are presenting on a panel together, or seeking her expertise to review text for an article or website, she’s been dependable and added another level of understanding to the topic. "

Nathan Warren-Kigenyi, Manager, Traffic Safety Research and Analysis, AAA National Office


“Judge Mary Celeste (ret.) has a wealth of knowledge regarding the marijuana industry and it showed with her presentation at the 2016 DATIA Annual Conference. She provided our attendees with valuable, timely and insightful information on how marijuana legalization is changing the landscape of America. She’s been a pleasure to work with, a great resource, and we look forward to working with her in the future!”

The Drug & Alcohol Testing Industry Association (DATIA)


“Judge Celeste is an extremely knowledgeable and captivating presenter. After you finish listening to her, you will be more enlightened than you were when you walked in. She also injects appropriate humor into her presentations. Never a boring moment, for sure.”

George Geisler, Law Enforcement Services, PA DUI Association


"Would recommend again…very good… lots of information. Informative/well presented; Excellent!; Good information, efficient use of time; Very interesting and informative; Good speaker; Good information."

Institute of Continuing Judicial Education of Georgia


"Judge Mary A. Celeste (ret.) served as a consultant and expert witness in my marijuana driving case. She was a true professional and educated the jury on matters related to marijuana and driving, I highly recommend her for case review, trial preparation, jury selection and her expert testimony. We obtained a favorable verdict largely attributable to the information and testimony from Judge Celeste (ret.)"

Sherri A. Murgallis, Esq. Murgallis Law Firm, LLC, Louisville, Colorado


Presentation to ALA 2017, Marijuana in the Workplace


Upcoming Presentations

New England Association of Drug Court Professionals (NEADCP)

Marijuana Update

November 29, 2018,  Marlborough, Massachucettes


California Western School of Law

Teaching Junket, Marijuana and the Law

January-April, 2019, San Diego, California


State Bar Association of North Dakota

Marijuana & the Youth; Cannabis & Driving

June 12,, 2019 , Bismarck, North Dakota


AJA/Illinois Judges

Marijuana & Driving...Panel Moderator

September 16, 2019, Chicago, Illinois