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Meet our Doctors


John Woell

I am honored to have so many loyal patients to care for in our community. Our dental practice has many multi-generational families who entrust their oral health to our team.

I believe in treating people with a vision of maintaining each individual’s oral health for an entire lifetime. This requires a comprehensive approach which includes assessing one’s medical, periodontal, orthodontic, and restorative needs. I trained early in my career to diagnose and treat people having malocclusion problems by utilizing orthodontic therapy. Then the reconstructive dentistry is done.

As a native of Morris, I began my undergraduate studies at the University of Minnesota Morris and then continued to the University of Minnesota School of Dentistry. I am an ongoing member of the Seattle Study Club whose educational objective is to use a multidisciplinary approach in treating complex dental conditions. I am also a member of the American Dental Association, the Minnesota Dental Association and the St. Paul District Dental Society.

The profession of dentistry gives many opportunities for volunteering. One of which is to participate at the Hope Dental Clinic (formerly the Union Gospel Mission in St. Paul.) I have also been fortunate to be a team member of Programa San Francisco De Asis Sonrisa on the cleft palate team for over 10 years, along with my wife Marcia. This medical team has treated more than 6,000 cleft lip/palate children in Peru. One other area of mission is to provide preventive dental care for children and adults on an annual basis at the St. Rose School in the Gris Gris community of Haiti.

In addition to my passion for dentistry, I enjoy traveling, cycling, skiing, and all family activities with my wife and our four children/spouses and four grandchildren.


Elizabeth Woell Rhode

I am honored to be a part of the team at Dental Health Care Center since 2015. I was fortunate to have two great dentist mentors, Dr. Cashin and Dr. Woell, my father. I find practicing dentistry to be invigorating, and the real joy of dentistry comes from building relationships with our patients and helping them live healthier lives each day. It is my goal to provide comprehensive care that is suited to each individual’s wants and needs.

I studied Biology and French at the College of St. Benedict, and then pursued a dental education at the University of Minnesota School of Dentistry. I am an active member of the American Dental Association, Minnesota Dental Association, and Spear Study Club. These continuing education opportunities allow me to provide comprehensive care for the entire family.

Outside of dentistry, I love spending time with my husband, Rick, and our toddler, Gavin. I also have a love of the outdoors and enjoy biking in the Twin Cities, reading, and cooking.


Long Thao

Born, raised and still residing in Minneapolis, I believe in building trust and relationships with the people of my community and providing comprehensive dental care. I keep a well rounded approach to the types of treatment I provide, which include preventive care, fillings, crowns/bridges, root canals, dentures and extractions. I am currently enrolled in a comprehensive Orthodontics (braces) course and look forward to helping patients achieve the smile they desire!

I knew dentistry was right for me the moment I began shadowing dental offices during my undergraduate years at the University of Wisconsin – Madison. This ultimately led to a degree from the University of Minnesota School of Dentistry. Being a dentist is the perfect blend of working with people and applying three subjects I have always enjoyed: engineering, art and science.

I am a member of the American Dental Association, Minnesota Dental Association and Academy of GP Orthodontics. I have worked with patients ranging from 6 months of age all the way to 102 years old. I truly appreciate dentistry in its entirety.

Outside of dentistry, I enjoy spending time with my wonderful wife (May) and daughter (Harper), fishing, watching football and playing disc golf. I am a proud Eagle Scout of Troop 100, where I currently serve as Committee Chairman.


Lisa Cashin – Retired

Dr. Lisa Cashin was the first in her family to enter the dental field.  She was inclined toward dentistry because she loved working with her hands and working with people.  Dr. Cashin graduated from the University of Minnesota with a BA in psychology and then the University of MN School of Dentistry.  She also taught in the dental school pre-clinical area after her graduation for 3 years, while working as an associate in a few dental practices in the metro area.  Dr. Cashin bought her own practice in Richfield from Dr. Roy A Johnson before joining Dental Health Care Center in 1985.  She continues to further her dental education so she can provide her patients, of all ages, with comprehensive treatment using the latest techniques.

Dr. Cashin treats patients with cosmetic restorations, including CEREC crowns which are made in the office during a single visit.  She also performs comfortable root canal treatments and extractions when needed.  When implant treatment has been completed with a specialist, Dr. Cashin provides the final ceramic crown and bridgework.  If implants are not an option for the patient, she will provide them with a well-fitted partial or denture.  Dr. Cashin is also a certified clear braces provider, enabling her to give minor orthodontic care to adults as part of a cosmetic treatment plan when needed, or desired, by her patients.  In addition, Dr. Cashin is a certified Perio Protect provider.  This is another treatment modality of homecare therapy to those patients with ongoing gum disease issues. She continues to enjoy giving care to her diverse and multi-generational patients with gentle hands.

Dr. Cashin is a member of several dental organizations, including the American Dental Association, the MN Dental Association, the Minneapolis Distric Dental Association, The Southside Comprehensive Dental Study Club and the Bloomington Study Club.  She has volunteered for the MN Mission of Mercy, Give Kids a Smile Day, and Feed Our Starving Children for years.

In addition, Dr. Cashin enjoys an active family life with her husband, Chuck and two sons, Matt and Shane.  She also loves to travel and relax up north at their cabin with friends and family.