Meet our team 

C. Bruce Hasenauer, DDS

In 1998 Dr. Bruce Hasenauer received a phone call from a retirement community–would he provide on-site dental services? His love of people moved him and the challenge of it all motivated him. Soon Dr. Bruce and his son, Dr. Corey, were serving several communities in the evenings and on weekends. 

The journey began with equipment that could fit in the car. As the needs grew, so did the breadth of services and the vehicle! Soon the equipment was housed in a van and then a trailer and finally a delivery truck. Dr. Bruce was called out of his teaching career and back to Centennial.

His return sparked the vision for a self-contained clinic on wheels. A Los Angeles transit bus was purchased and converted to a full-service, state-of-the-art dental clinic. At the beginning of 2008 a second clinic was revealed and plans for the third were in motion not long after. Dr. Corey and his wife have since moved back east to be close to her family.

Bruce Hasenauer, D.D.S. is a graduate of Loma Linda University. He practiced in Centennial for almost 25 years before moving back to Loma Linda–this time as a professor. While in private practice, Dr. Bruce co-founded Hampden Dental College, a training program for dental assistants. Presently, he provides on-going oral health training for the Alzheimer’s Association. He also serves as the Board Chairman of The Healing Place, a downtown program designed to bring healing to the homeless. Dr. Bruce and his wife, Sheryl, also have two grown daughters, two handsome sons-in-law and a trio of delightful grandchildren. Dr. Bruce enjoys the Beatles, movies and sculpting.

Marissa Holloway McGraw, DMD

Dr. Holloway McGraw believes in providing optimal comprehensive care that is tailored to the lives and budgets of the senior community. Committed to providing the best care possible, she has attended the Western Regional Dental Conference since 2014 and has presented dental research at the conference. Dr. Holloway McGraw joined the Access Mobile Dental team in August of 2018.

When Dr. Holloway McGraw is not working she spends her time traveling and with her husband and son. She wants to eventually visit all 50 states and see as many countries/cultures she can. One of her favorite trips was to Tonga where she provided dental care to the underserved population while also immersing herself in the culture. Since moving to Denver, she has continued to develop her outdoor passions, including hiking, and is committed to learning how to ski. She recently began watercoloring and is discovering a new fun and creative side.

What attracted you to working with seniors?

“My grandmother lived in a care home and it was hard for my mom to set up appointments from her. She was working a full time job and was a single mother. I think it is great that we come to the patient to make it easier for them and their families. I love being able to help the patients and families, and feel it is even more rewarding than a normal office setting. I love connecting with patients and hearing about their lives. 

Working for a mobile practice gives me a different experience day to day. We go to multiple cities and communities which allows for a different adventure every day.”

Richard Worley, DDS

Dr. Worley joined the Access Mobile Dental team in June of 2014, soon after selling his Denver private practice. The mission statement of his private practice was, “We are a traditional dental practice dedicated to excellence and exceptional care,” and that statement continues to define his practice in semi-retirement. With 50 years of experience in dentistry, he is confident and competent in care, and has an abundance of continuing education in geriatric care. In his free time, he enjoys traveling with his wife Sharon, a retired French teacher with a Master’s from Middlebury who lived in France on a Fullbright Exchange. They enjoy time in France, as well as time on their boat in Florida. They enjoy taking Chase, their Collie, for walks and spending time with friends and family.

What is it about Access Mobile Dental that brings you professional joy?

“Access Mobile Dental is a unique mobile practice, well managed, and in my view the most efficient and practical. Once in the mobile, it is the familiar dental environment, we simply come to you and can provide a level of comprehensive and comfortable care that can be difficult with other mobile care models. Patients are highly appreciative, as are families. Disruption related to transportation for dental care is one of the leading factors preventing seniors from maintaining dental health. Helping seniors remain dentally healthy as they can be or will accept is always rewarding. And, they have great stories!”

Jason Difani, DDS

Dr. Difani was born and raised in Central Illinois. He attended the University of Illinois, earning degrees in Biology and Chemistry. He received his dental degree from the University of Illinois at Chicago College of Dentistry in 2009. He practiced for four years in Chicago before moving to Denver in 2013 to start a business and grow his family. He has two children, Avery and Hudson, two dogs, Chloe and Penny, and two cats, Rocket and Oliver. His wife, Kristen, is a Colorado native and works in Denver Public Schools. 

Jordyn Reiakvam, DDS

Dr. Reiakvam has been in and around the dental office as long as she can remember, starting at the front desk, and then dental assisting and shadowing her father, Dr. Per T. Reiakvam. Dr. Reiakvam received her undergraduate degree in Integrated Physiology in only three years at the University of Colorado Boulder before moving to California to earn her Doctorate of Dental Surgery at Loma Linda University. When not exploring the Colorado trails, you can find her nose in a book reading anything she can get her hands on.


Andrea has coordinated care visits with Access Mobile Dental since 2017, and has grown up with a passion for caring for seniors, passed down from her mother, a hospice nurse. Call her today to inquire about how our services can help you or your loved ones. A veteran in the dental field, Andrea has experience, empathy, and a passion for caring for seniors.


Serena has been part of the Access Mobile Dental team in nearly every way! Since 2009, Serena has served our patients as a dental assistant, in the office, and as the coordinator of our Dental Hygiene Therapy program. She is thorough and thoughtful, has a robust knowledge of our patients and dental care for seniors, and is a joy to work with. 

Jennifer                                         Ruth Anne 

A great patient experience is achievable thanks to great dental assistants. Jennifer, Ruth Anne, and Luz are a compassionate and caring team that work hard to ensure an excellent experience for every patient. Our dental assistants go beyond the traditional operatory to ensure that our services are accessible and safe.