Business Planning

Permit Acquisition

Team Building

Facility Design

Staff Training

Marketing Services


We’re Quantum 9, A Cannabis Consulting Firm Located In Chicago. Take A Look Around & Don’t Be Shy.

Quantum 9, Inc. is a Chicago, IL-based cannabis consulting firm specializing in permit acquisition. We excel in highly competitive limited license markets. We have one of the highest success rates in the industry, helping obtain 73 of the 81 licenses submitted to cultivate, manufacture, and dispense cannabis. Having worked in twenty-one states and six countries, we are one of the largest cannabis consulting practices in the world. Our team includes 66 marijuana consultants that work in every field of the cannabis industry. However, our areas of expertise include permit acquisition, team building, public policy, employee training, and process planning. We help clients fully maximize the potential of any cannabis cultivation, processing, and dispensary business.

Our group includes some of the most talented marijuana consultants in the world including award-winning cannabis cultivators, scientists, and business owners. Our team holds advanced degrees in medicine, business, agriculture, horticulture, and plant sciences. Our staff can make any application submission for licensing stronger.

Quantum 9 was named one of the most recognized names in cannabis consulting by CannaInsider, recipient of both the Silver Golden Bridge Award and Stevie Award, and inducted into the Forbes Chicago Business Council having received the CannAward for cannabis technology excellence.

Cannabis License Acquisition


It takes a lot to be one of the most trusted names in the cannabis consulting market. However, Quantum 9 works around the world helping patients enter the marijuana industry. Our public policy work has lead to recognition from government officials foreign and domestic. Lastly, our real passion is aiding the patient’s understanding of medical cannabis.

Cannabis Consulting Blog Posts

Illinois Craft Grower Consulting: Winning a License

Illinois cannabis consulting flagIn this post, our Illinois Craft Growing Consulting team shows you how to win a craft grower license in Illinois.

Are you applying for an Illinois Cannabis Business License in Round 2?

Arizona Cannabis License Consultant

Arizona cannabis consulting flag

In this post, our Arizona Cannabis License Consultants break down the Safe and Smart Arizona Act, which will introduce adult-use cannabis in Arizona.

Michigan Marijuana License Consulting

Michigan cannabis consulting flag

In this post, the experts at Quantum 9 explain the benefits of Michigan marijuana license consulting. With that, they explain Michigan marijuana license requirements in depth.

New York Cannabis License Consulting

In this post, the experts at Quantum 9 explain the benefits of Michigan marijuana license consulting. With that, they explain Michigan marijuana license requirements in depth.

“It is with great honor that we recommend Quantum 9, Inc. for their excellence in the medical cannabis industry. Their attentiveness, attention to detail and pragmatic thinking was instrumental in our understanding of the taxation of medical cannabis.”
– Dr. Harald Terpe Member of Parliament

Letters of Recommendation

Illinois Letter of Recommendation

September 13, 2016

German Ministry Recommendation

February 2, 2015

Kentucky Letter of Recommendation

December 10, 2013

Cannabis Consulting Services

We have a team of FDA Attorneys that aid in the writing portion of the cannabis application submission.

We have a team of designers that will work with your local architects to show the government every facet of the business.

Standard Operating Procedures

We have over 200 SOPs that documents all areas of cannabis consulting including cultivation, processing and dispensing.

Security and Diversion Plan

Governments are looking for plans and procedures to keep employees, product and prevent the unauthorized use of cannabis.

Cannabis Consulting Media Appearances

Profits in Cannabis Cultivation

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Lead cannabis cultivation consultant, Ed Rosenthal, talks about the profits in cannabis cultivation. Ed Rosenthal works with the cannabis licensing consultants at Quantum 9.  Also, he brings knowledge into the cannabis consulting company…
Forbes Cannabis entrepreneur

Forbes Business Council and Mayes

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Cannabis License Consultant in Forbes Forbes quoted Quantum 9 CEO and marijuana licensing consultant Michael Mayes. Mayes was featured as one of the 13 Forbes Business Council members who offered advice on improving…

Illinois Cannabis Industry

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Michael Mayes is the CEO of Quantum 9, a global leader in cannabis license consulting. In an interview with Associated Press, Mayes discussed how unlikely it was for growers to come with a…
Marijuana Business Daily logo Cannabis Consultant

Medical marijuana patients in Illinois

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Marijuana Business Daily quoted Quantum 9 CEO and Illinois cannabis consultant Michael Mayes. He offered insight on how a low number of medical marijuana patients in Illinois can affect the industry. Medical Marijuana…