Meet The Team

Meet The Team

Your Dentist in Denver, Colorado

Dr. Jeff Johnston

Dr. Johnston - Cherry Creek DentistDr. Jeff Johnston, an experienced and well-known dentist in Denver, CO, has spent his lifetime in the dental industry and enjoys working with all of his patients.  As a young person, Dr. Johnston spent lots of time in many different dental offices receiving treatment for an impacted front tooth, which required multiple dental specialties. After a few dental surgeries and years in braces, Dr. Johnston’s career interest gradually molded into place. At age 12, Dr. Johnston felt dentistry had chosen him and has been passionate about it ever since.

While in dental school, Dr. Johnston served 4 years with dental missions in Mexico. This extracurricular activity allowed for an early start and additional hands on training while in school. Before graduating, in 2003, Dr. Johnston did an internship at the Brownsville Community Health Clinic on the Mexico – Texas border. Here, Dr. Johnston received more additional hands on dental education tending to low income individuals with extensive dental needs. 

In 2008, Dr. Johnston decided to create Ascent Dental Group, the culmination of his lifelong dental journey. As a dentist in the Denver, CO area, he is dedicated to creating an environment where doctor and patient have a strong lasting relationship that allows successful communication for better patient treatment, a product of being raised in a small town. He is passionate about the constant improvement of Ascent Dental, his continued dental education, his patient relationships, and his self-improvement.

Dr. Johnston is a member several professional organizations, which he chooses on the basis of whether they contribute to the overall well-being of patients and the profession. He is currently pursuing the Fellowship Award to the Academy of General Dentistry, which is earned through continuing dental education on the many different fields of dentistry. Other organizations include: American Dental Association, Metro Denver Society, Texas Tech Alumni, and the Optimist Club of Monoco South.

Dr. Johnston participates in local dental study clubs in the Denver Area. He serves as an Ambassador to the Glendale Chamber of Commerce, an Luminary for Hoya Conbio Dental Lasers, a mentor for, and is on the welcoming committee at his church.

In his spare time, Dr. Johnston loves to spend time with his wife Jana,  his daughter Aubrey and son Landon.

Dr. Kenneth White

General Dentist in Denver, CO

Dr. White was born in Davenport, Iowa, but lived the majority of his life in Dallas, Texas. He is a 1979 graduate of Plano Senior High School, just north of Dallas. He received his Bachelor of Science degree in biology from Stephen F. Austin State University in Nacogdoches, Texas in 1983, then returned to Dallas where he attended Baylor College of Dentistry, graduating in 1988.

Dr. White has earned a proud reputation in his particular niche of general dentistry. His career has focused on performing the finest in endodontics, or “root canals”, a service many dentists prefer not to do, but where Dr. White excels. He has performed over 16,000 successful root canal cases. Dr. White enjoys attending numerous continuing education courses each year to always keep advancing his knowledge of dentistry and the health professions in general. He is an experienced clinician who is dedicated to providing high quality, conservative, and comfortable dentistry.

Dr. White has said that throughout his entire life he had felt like a misplaced Coloradan. He and his wife Kristin moved to Colorado in 2011 and could not be happier. He states, “We are finally home!” Dr. White resides in Evergreen and he and Kristin enjoy cycling, hiking, kayaking, camping, scuba, and snow skiing. Dr. White is also a former professional musician and continues to play piano and guitar.


E.D.D.A ( Expanded duties dental assistant)

Valentina is a Colorado native and grew up in the heart of Denver. After graduating high school Valentina grew a passion for dentistry. In 2001 she enrolled at Concorde Career Collage to obtain her dental assistant certification. Valentina has since then continued to enjoy furthering her education and knowledge in the dental field by attending as many continuing education courses she could. Valentina has also used her down time in the dental office to learn all aspects of the dental front office including insurance billing and coding. Valentina finds it rewarding to be able to care for her patients and treat all their dental needs while also building a relationship with them. In her spare time, Valentina enjoys spending time with her husband Michael and her 4 children, Timothy Jiavana, Nivia and Amare. They enjoy being outdoors as much as possible and vacationing as often as they can.


Registered Dental Hygienist 

Kasandra - Ascent Dental Kasandra is a Colorado native. Born and raised in Denver/SE Aurora. She attended Grandview High School and graduated in 2009.  After high school she enrolled at Metropolitan State University to pursue a career as a Pharmacist. She worked as a Pharmacy Technician for 3 years. Before applying to Pharmacy School she met a friend/mentor that introduced her to the dental field. After working in the dental field for a few years it was then she knew her passion was dentistry.   She completed her Associates of Dental Hygiene at Community College of Denver where she was named Class President. She was awarded the Colgate STAR award for showing excellence and commitment to the hygiene profession by exhibiting extraordinary compassion in patient care, dedication to community service and demonstrating outstanding patient education.

Kasandra has a wide range of experience in the dental field. She has worked in pediatric, oral surgery, and periodontal specialty dentistry. She is an avid member of the American Dental Hygiene Association and attends continuing education courses monthly to keep up with today’s modern dentistry.

Outside of work Kasandra spends time with her husband, Cris, and her two dogs Peanut and Lola.  She goes on hikes all over Colorado with her family. She enjoys the gym, kickboxing, yoga, and the great outdoors of Colorado!


Dental Assistant 

Courtney - Dental AssistantCourtney is a Colorado native. While working for a non-profit specializing in dentistry, she developed an interest in dental assisting. In 2018, she completed her dental assisting certificate through the Colorado Dental Assisting School.  Courtney enjoys getting to know the patients and helping make them more comfortable about being at the dentist. She spends her free time traveling as often as possible and enjoying time with family and friends.