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About Us Ready to Get Started with an Appointment? Hi! I'm Ken Kloess. Thanks for visiting my website. I'll tell you a little bit about myself. I graduated from Dupo High School in 1978, and attended Eastern Illinois University for undergraduate studies. I earned my Doctor of Dental Medicine degree from Southern Illinois University School of Dental Medicine in 1985, and started my practice in the fall of that year. I have practiced in the same Dupo location for 26 years. I enjoy the practice of dentistry for the challenge it presents in devising practical solutions to complex problems. Keeping up with dental continuing education courses helps me visualize new ways to solve problems that greatly benefit the patient. On a more personal note, I have been married to my wife Karen, since 1986, and have two children, Ben and Haley, that I am very proud of. In my spare time, I enjoy dental continuing education courses and instructing high performance driving schools.


Explains conditions and treatments
Takes time to answer my questions
Provides follow-up as needed
Office cleanliness

Based on patient feedback.


Dr. Kloess' Rating
Patient Perspective
5.0 Explains conditions and treatments
5.0 Takes time to answer my questions
5.0 Provides follow-up as needed
Office Rating
Showing ratings for:
240 S Main St, Dupo, IL, 62239
n/a Average office wait time
5.0 Office cleanliness
5.0 Courteous staff
5.0 Scheduling flexibility
Kloess Kenneth R Office
240 S Main St
Dupo, IL, 62239
Showing 1-20 of 172 reviews
"He has the best staff and Dr Kloess explains everything up front. You get right in and your treatment starts immediately. "
  • June 12, 2024
"Good. "
  • May 2, 2024
"Today was my first appointment with Dr Kloess. I let him know all my concerns, he examined my teeth. He addressed ever concern I had, even the ones I thought were silly to ask. He was a straight shooter in his answers, I have a military background and I like straight answers. Definitely going back to him."
  • May 1, 2024
"Another successful dentist visit. Dr. Kloess, Carmen, Judy, and Machelle are great. "
  • April 30, 2024
"Great! That’s why I keep coming back."
  • April 29, 2024
"Best staff. Always there to help "
  • April 15, 2024
"They’re the best!!! "
  • April 11, 2024
"Dr kloess and the ladies always do such a great job. That's the reason I've been going to his office since he started his practice so many years ago. "
  • April 10, 2024
"Always good "
  • April 10, 2024
"First visit. Dr. Kloess and his staff treated me well and answered my questions. I'm glad I found him. "
  • April 10, 2024
"Great visit as usual."
  • April 8, 2024
"Dr. Kloess and his wonderful team have been caring for my family’s teeth for over 30 years! I can’t say enough good things about them. Professional, honest, considerate, and caring. "
  • April 4, 2024
"Excellent, He fixed a front tooth of mine! Thanks for my beautiful smile! "
  • March 27, 2024
"The whole crew is great. They listen to your problems and always has the answer."
  • March 14, 2024
"Excellent dentist and staff Judy Carmen etc. They clean my teeth regularly and I don't think I had a cavity in over 20 years recommend them all highly. "
  • March 13, 2024
"It was great. I am a "nervous" patient, but Dr. Kloess makes sure I am comfortable and pain free."
  • March 12, 2024
"Great visit as usual."
  • March 11, 2024
"When we first started going to Dr. Kloess my husband had not been to a dentist in 30 years. We love Dr. Kloess and the staff and my husband is comfortable setting up future appointments with the dentist because of the pleasant experience he had in the office!!!"
  • February 25, 2024
"Who could not love Dr. kloess , Carmen the rest of the staff?"
  • February 22, 2024
"My family I have been a patients of Dr Kloess’s office for years. I have never been a fan of dental work but I’m very comfortable and pleased with Dr Kloess and his office staff. Thankful we have a Dentist in our home town."
  • February 15, 2024


Kloess Kenneth R Office
240 S Main St
Dupo, IL, 62239



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