Meet Our Doctors

Experienced Dentists in Atchison, KS

Dr. Justin Hummelgard, DDS


My name is Dr. Justin Hummelgard and as of September 2023, I became the new owner of this practice and plan to work alongside your beloved Dr. John Dolenz. I am very excited to be working with John and his team that has been here in the community for years. I have personally known John now for about 3 years, and even before that, I felt I knew him through my wife. I’ve enjoyed getting to know the Dolenz team and their philosophy of patient care. Their office and patients have been well cared for, and I know many of you have come to rely on them as a trusted resource over the years.

I am originally from Minnesota but have been living in Atchison since 2020. I completed my undergraduate studies at the University of Saint Thomas in St. Paul, MN, and earned my DDS degree at Creighton University School of Dentistry, where I met my wife Jordan Hummelgard (maiden name Campbell). She was born and raised in Atchison, completed her undergraduate studies at Benedictine College, and is a dentist at the Atchison County Health Clinic. While attending dental school, I received multiple awards for implants, endodontics, and aesthetic dentistry. I know this is cliché, but as a dentist, I strive to treat my patients as if they were a family member of mine. Having said that, everyone is different and no mouth is the same, so I individualize each treatment according to the whole person. I love the communication and relationships that I build as a dentist. The best part is that I can do this with my neighbors. For the past three years, I have been practicing in St. Joseph and have owned a dental practice there since 2022. Now with the help of John, I can finally be in my hometown.


Outside of the dental office, my wife Jordan and I are with our two kids Beckham (3.5 yo) and Jett (under 1 yo), and our dog Chip. I love being in the outdoors where I like to fish and go on walks. In addition to the outdoors, I am a big sports fan. Being from the Minneapolis area, I love my Minnesota sports teams. We haven’t had the success that many of the teams here have had over recent years, so it’s nice to be in an area where there are winning teams hosting parades. The red has already started rubbing off on me!


I know change can be scary. After getting to know John and the staff, however, I can say that we are like-minded in many ways. I look forward to making the transition as easy as possible. Your favorite dentist will still be at the office, so it’s not a goodbye to him, but rather just an introduction to the next stage in both of our careers. I really look forward to meeting you, earning your trust, and caring for your family.




Justin Hummelgard, DDS

Dr. John A Dolenz, DDS

John A. Dolenz, D.D.S. has been practicing dentistry in Atchison since 1998. Dr. Dolenz graduated from the honors program at Baylor with a BS in biology in 1986. He graduated from UMKC School of Dentistry in 1991. He served in the US Air Force from 1991-1995. His residency training was at Barksdale AFB in Shreveport, LA and served at bases in England and at Vance AFB in Enid, where he was a flight chief at the dental clinic. He attends numerous hours of continuing dental education yearly, as he progressively implements new technologies into the office.

Dr. Dolenz has over 30 years of experience in providing patients with exceptional dental care. To enhance his skills, he attends numerous hours of continuing dental education yearly and now even performs dental implant services. He enjoys fishing and spending time with his wife Kay and their three children.

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