Patient FAQs

Frequently Asked Questions about PDI & Medical Marijuana

If you have a question we haven’t answered here, please contact us.
We’ll get back to you ASAP.

When will you open?

We are now open! Visit our medical cannabis products and services page to see what we have in stock, and follow us on Facebook for the latest news.


Monday: 12:00 pm – 5:00 pm
Tuesday: 12:00 pm – 7:00 pm
Wednesday: 12:00 pm – 5:00 pm
Thursday: 12:00 pm – 5:00 pm
Friday: 8:00 am – 4:00 pm
Saturday: 10:00 am – 3:00 pm
Sunday: Closed

How can I choose PDI as my designated Illinois medical cannabis dispensary?

PDI Medical is on the Illinois list of registered cannabis dispensaries.

If you have already chosen another dispensary, you can fill out and submit a new Illinois dispensary selection form. If you need help, we can walk you through the process. Feel free to contact us for assistance or stop by. We have a public access space to work with you even if you don’t yet have your Illinois medical marijuana card.

What forms of payment to you accept?

We accept cash and debit cards. We also have an ATM on the premises if needed.

What does PDI stand for?

PDI stands for Professional Dispensaries of Illinois. Our owners and staff are professional pharmacists, certified pharmacist technicians and cannabis experts.

Why should I choose PDI?

  • We are medical professionals. Pharmacists are the most trusted professionals in the US. Our pharmacist owners and product specialists help each patient develop a holistic, integrative medical treatment plan based on your unique history and profile.
  • One-stop shop. Obtaining and using medical marijuana can be frustrating for sick patients. PDI’s staff and state-approved services (fingerprinting, passport photography) can help you get your credentials, select the right medicine, and choose an effective delivery device.
  • We care about you. We provide medical cannabis to patients who need relief. Cannabis is a drug, and as a drug, it should be dispensed carefully. We listen to and work closely with patients to solve challenges and find the solutions that will improve their quality of life.
  • Locally owned and operated. Many dispensaries are corporately owned, without local ties. At PDI, we have lived and worked in this community for decades. Our children go to school here. We work hand in hand with the Buffalo Grove Chief of Police, Fire Chief and Community Development Director.

Who leads PDI?

Thousands of patients have trusted our owners with their medical care for years.

  • Dr. Mark H. Mandel, PharmD, is CEO of PDI Medical and also the owner of Mark Drugs, a 30-year-old compounding pharmacy with locations in Deerfield and Roselle. He is also hosts the radio show, “The Doctor and the Pharmacist.”
  • Joseph Friedman, R.Ph, MBA, is COO of PDI Medical. As a licensed pharmacist, Friedman has spent the last several years educating physicians and other pharmacy professionals about the safe and appropriate use of medical marijuana for patients with specific conditions.

Who can apply for a medical marijuana card in Illinois?

Every state has different rules from the amounts of medical cannabis a patient can have to who can grow it and where and what diseases or conditions qualify.

Caregivers and patients can apply. See our current list of Illinois diseases and conditions that may qualify for you for treatment with medical marijuana.

Do I have to buy cannabis at the dispensary nearest to me?

No, you are free to buy medical marijuana at the dispensary that best fits your needs. However, patients are not allowed to buy from more than one dispensary.

What cities does PDI Medical serve?

The pharmacist staff at PDI Medical provides medical marijuana products, counseling and services to individuals in the Chicago suburbs, including Northern Lake County, McHenry County and Cook County. Specific cities include Buffalo Grove, Antioch, Banockburn, Barrington, Barrington Hills, Lake Barrington, North Barrington, Cary, Crystal Lake, Deer Park, Deerfield, Gurnee, Hawthorne Woods, Lake Zurich, Libertyville, Lincolnshire, Long Grove, Kildare, Mundelein, North Chicago, Palatine, Riverwoods, Vernon Hills, Waukegan, Wheeling, and Zion.

When will patients be able to buy medical marijuana in Illinois?

Registered qualifying patients can expect to be able to buy medical cannabis products from Illinois dispensaries by November 2015. PDI Medical will open its dispensary in Buffalo Grove as soon as possible. We will help patients begin the application process on-site before product is available. Contact us for more information and updates.

Is there a short history about the Illinois Pilot Program?

​Yes. Right here. The chief sponsor of the Illinois Compassionate Use of Medical Cannabis Pilot Program was State Representative Lou Lang. His bill passed the Illinois General Assembly by one vote and was signed into law during the summer of 2013, making Illinois the 20th state to legalize medical marijuana. The law became effective on January 1, 2014. As required, state agencies held many public hearings and studied the rules and regulation — and results — from other jurisdictions.

They made the applications for cultivation centers and dispensaries available in August 2014. Completed applications for dispensaries were submitted between September 2 and September 22, 2014, and will be evaluated according to a rigorous point system. The state is expected to grant licenses to no more than 60 dispensaries and 21 cultivation centers before the end of the year. You can access the law on the Illinois General Assembly’s website.

Is the Illinois Program permanent?

No. The program in Illinois is a pilot program. The current law is scheduled to be repealed on January 1, 2018. If Illinois does this correctly, another law to extend the program may be passed and registered qualifying patients will be able to continue receiving the benefits they need.

Is there an age requirement for patients?

Absolutely. Registered qualifying patients must be at least 18 years old. However, children and teenagers with the covered diseases and conditions may be granted permission to use medical marijuana products.

Does medical marijuana always make you high?

Absolutely not. In fact, the “high-making” chemicals are often purposely produced in negligible or sub-therapeutic amounts in cannabis-based medicinal products during the processing stage. This is particularly important for children and teens with special health needs.

Isn’t marijuana illegal?

It’s a complex situation. At a state level, as of July 2015, a total of 23 states, the District of Columbia and Guam now allow for comprehensive public medical marijuana and cannabis programs.

Although marijuana is still illegal federally, the US Department of Justice has stated it will no longer enforce its laws against marijuana where cannabis has been declared legal for medical and/or recreational use. In other words, the federal government has said that it won’t shut down state cannabis programs. See Dr. Sanjay Gupta’s CNN essays on August 2013 and March 2014 and PDI Medical’s Joseph Friedman’s article in Drug Topics.

When did marijuana become illegal in the United States?

Using cannabis became illegal in the United States in the 1930s and became a Schedule I drug in 1970. See Dr. Sanjay Gupta’s CNN essays on August 2013 and March 2014 and PDI Medical’s Joseph Friedman’s article in Drug Topics.

Do you have to smoke medical cannabis?

Not at all. Smoking is only one way to administer medical marijuana. Others include vaporizing, topical applications (oils, ointments, balms, etc.), tinctures, tonics, under the tongue tablets, capsules, oral/nasal sprays, and edibles.

Where is medical cannabis legal in the United States?

As July 2015, 23 states, Washington DC and Guam, 25 jurisdictions in all, have legalized the use of medical marijuana. States include Alaska, Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Hawaii, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nevada, New Hampshire, New Jersey, New Mexico, New York, Oregon, Rhode Island, Vermont, Washington.

What’s a Schedule I drug according to the Controlled Substances Act of 1970?

A Schedule I drug has a high potential for abuse, has no accepted medical use, and cannot be used safely. Individual states, such as Connecticut and Oregon, have reclassified cannabis as a Schedule II drug.

Will health insurance pay for medical cannabis?

Not as far as we know. As long as marijuana remains a Schedule I drug, it’s unlikely to be covered by health insurance.

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Our Dispensary

Convenient Location

1623 Barclay Blvd. Buffalo Grove, IL 60089

Call Today! 1-224-377-9PDI (9734)

Hours of Operation

Monday – 12pm – 5pm
Tuesday – 12pm – 7pm
Wednesday – 12pm – 5pm
Thursday – 12pm – 7pm
Friday – 10am – 4pm
Saturday – 10am – 3pm
Sunday – 10am – 3pm