Dr. John Minalt, DDS practices advanced adult restorative dentistry with a strong focus on implant dentistry in the Chicago suburb of Barrington, IL.


Monday thru Friday:
By Appointment Only; Evenings Available

Mornings Available

We very strongly believe in the value of exceptional cosmetic and family dentistry for our patients. A lifetime of healthy, beautiful smiles – without gum disease or missing teeth – is priceless, and it’s a ticket to greater self-confidence and success in life.

Dr. Minalt graduated from the University Of Illinois College Of Dentistry after attending Loyola University for his undergraduate studies.  He has been practicing dentistry since 1988.  He completed advanced training in dental implant treatment at the Medical College of Georgia and at Detroit Mercy Dental School studying under world class teachers such as Paul Mentag, Carl Misch, Tim Kosinski, Ed Mills, and O’ Hilt Tatum. He has attended hundreds of hours of implant continuing education with some of the greats in the field like Maurice Salama and Palo Malo. Dr. Minalt even developed a system for sharpening dental implant drills that was later sold to another vendor.

Dr. Minalt is passionate about implant dentistry and strives to treat each case individually and not make each case fit a one sized template corporate approach.

Dr. Minalt has a Fellowship from the American Academy of Implant Dentistry, the premier credentialing and education provider in the field of dental Implants. Dr. Minalt also completed a hospital-based general anesthesia residency at Illinois Masonic Medical Center.  Dr. Minalt is a leader in the dental field of IV Sedation and is a Fellow of the American Dental Society of Anesthesiology and a Diplomat of the National Dental Board of Anesthesia.  Dr. Minalt is a Past President of Illinois State Dental Anesthesia Society and has presented lectures on Dental Anesthesia to local and state groups. He is also a member of the American Dental Association, Illinois State Dental Society, Chicago Dental Society, Academy of Conscious Sedation, and American Academy of Implant Dentistry.

“I have over 25 years of experience in all types of dental implant placement and restoration and have an extremely high rate of success, even in the most difficult cases.  Dental implants are not a ‘one size fits all’ corporate dentistry procedure.  They require experience, training, understanding and compassion for each patient’s unique situation. I strongly recommend anyone considering dental implants to research the dentist’s experience, credentials, and their ability to perform the procedure.  This will make for a positive experience and outcome that will last for many, many years.”

When not in the office, Dr. Minalt enjoys spending time outdoors, golfing, fishing, cycling, and fixing things around his home.

Dr. Gregory S. Tehle

Dr. Gregory S. Tehle  has been in practice since 1979. Today, he focuses primarily on restorative and cosmetic dentistry. The focus of his practice has always been implementing the most current treatment therapies and acquiring the latest dental technologies to provide the highest-quality service to his patients. He has been a resident of the Barrington area since 1985 and has two sons. Dr. Tehle enjoys exercising, hiking, bicycling, listening to all genres of music and traveling. His favorite pastime is spending time with his two college-aged sons.

  • BSc: Dentistry, University of Illinois College of Dentistry, Chicago, IL
  • DDS: University of Illinois College of Dentistry
  • Dental Implant Restoration Compendium: Northwestern University
  • Current Member: American Dental Association
  • Founding Member: American Academy of Computerized Dentists
  • Lecturer: Oral Cancer Detection, The Garlands Retirement Community, Barrington, IL
  • Curriculum Advisory Committee: University of Illinois College of Dentistry
  • Established annual scholarship for undergraduate research, University of Illinois College of Dentistry

Registered Dental Hygienist


Diana has been a dedicated hygienist since 1986 when she graduated in the top part of her class at Harper College.  She has been passionate about her career ever since and has received advanced training in local anesthesia, local chemotherapy application, laser dentistry and has attended more than her share of dental implant continuing education.

As a member of a comprehensive dental implant team for over 15 years Diana has gained the knowledge and insight to help her patients through complex implant treatment and assist in long term maintenance.  Diana’s attention to details makes her perfect for dental hygiene.   With understanding and compassion she treats patients from a simple cleaning through non surgical periodontal disease treatment.  Diana takes her time to get to know and understand her patients.  Diana makes sure the patients understand the suggestions she makes to them to help in their own oral health care.   Diana has had patients for a lifetime and it’s like watching family come over the way she interacts with them.  Kind and low key, but a tremendous asset to the practice and a blessing to all of the patients that she treats.

Diana is a mother of two daughters and enjoys family time, cooking and assisting in community service.

Registered Dental Hygienist


Mary, a 1986 graduate from Harper College, joined our team in the fall of 2017. Mary loves being a Dental Hygienist and her deep desire to help others shines through her every day. Throughout her 30 year career, Mary has seen much progression in the dental world. She has kept herself up to date through continuing education and has added skills like being able to deliver local anesthetic, uses laser to help kill microorganisms, and to apply local-chemotherapeutic agents into diseased areas.

One of Mary’s biggest attributes is her ability to make her patient feel comfortable during the dental hygiene process. Building relationships that allow trust to build is essential to her way of practicing.

Mary lives with her husband Wes of 29 years along with Halo, the siamese cat and Eddie their cane corso dog. Their son, Matt, is 26 years old and lives out on his own. She enjoys singing, riding her ATV and exploring nature.

Dental Assistant


Jackie grew up on the North side of Chicago. She began working in the dental field thirty-one years ago. She currently resides in the northwest suburbs with her husband and two children. Jackie is very involved with her children, volunteering at their schools on various committees and in scouting. Jackie and her family participate in Civil War Reenactments and the Honor Flight program for World War II Veterans. When she is not cheering her children on in their various sports, you can find her enjoying outdoor activities like hiking, camping, sledding and swimming.

Jackie is youngest of three children. This spot in her family made Jackie very good at listening and taking directions, but also determined. These qualities in Jackie make her a very kind and compassionate person, as well as a great dental assistant.

Office Coordinator


After a successful career as general manager for several prominent restaurants, Kathy made the decision to change career paths and found her niche in the dental field. She has 19 years of experience in dentistry, including periodontics and oral surgery, as well as general dentistry. She became a member of our team in August of 2004. With extensive training seminars in practice management, combined with her strong work ethic and commitment to superior customer service, Kathy has become an integral part of Dr. Minalt’s practice.

Kathy is a registered bone marrow donor. She hopes that one day she can make a difference in a recipient patient’s life. She volunteers as a peer mentor for the elderly and at food pantries during the holidays.   As an avid animal lover, she participates in spay, neuter, release and fostering programs.

During her free time, Kathy loves to read and spend time with her family and pets.

Dental Assistant


Violet came to the United States from Poland in 2004. She attended Ampo Dental School in Chicago.

Violet enjoys working with our doctors and seeing the joy they bring to the patients after their treatment.

Violet is married to a loving husband and has a beautiful son named Jacob.

She enjoys outdoor activities, riding her motorcycle, fishing and spending time with her family and her little dog, Hyper.

Get in Touch With Us


For world-class advanced adult restorative dentistry, visit John Minalt, DDS and Associates. Call us at (847) 381-5958 or simply fill out our online form to schedule an appointment.


(847) 381-5958


© 2018 John Minalt DDS and Associates | Website Powered by RAGASMEDIA.

John Minalt DDS and Associates serves patients in the communities of Cook County, IL Kane County, IL and Lake County, IL, that includes Barrington, South Barrington, Barrington Hills, North Barrington, Lake in the Hills, Lake Zurich, Schaumburg, Arlington Heights and Palatine.