Dentistry with Integrity


The mission of Dr. Schaffner, Dr. Eulenstein and their staff is to help our patients achieve ultimate oral health in order to enjoy better overall health. We believe that dentistry is a service to provide based solely on individual patient needs, not a product to be sold. Our doctors and staff will explain your dental needs and treatment options in an easy to understand manner and never pressure you into any treatment.


Dr. Schaffner Fort Collins Dentist headshot on grey background

Dr. Nathan Schaffner


Following twenty-two years of practicing in the small eastern Colorado town of Yuma and six years as the on-site dentist for the employees of Woodward, Inc., Dr. Schaffner established Schaffner Family Dental in January, 2017 in beautiful Fort Collins.  He feels honored to have had most of his Woodward patients follow him to his new private practice.  The practice continues to grow through word-of-mouth referrals.

As owner of the only dental practice in Yuma, Colorado, Dr. Schaffner gained valuable experience in all aspects of general dentistry.  He enjoys treating patients of all ages.  In addition to his private practice, Dr. Schaffner served as the consulting/treating dentist at long-term care facilities in northeastern Colorado.  Although most patient dental care is completed in our office, Dr. Schaffner feels blessed to practice in a community with outstanding dental specialists to whom he refers for specialty dental care as needed.

Outside of dentistry, Dr. Schaffner most enjoys spending time with his wife (Liz), his three daughters (Brielle, BrookLynn and Janie) and his son-in-law (Matt).  When time allows, he likes mountain get-aways and other travel.  He is actively involved in Valley Christian Church of Loveland where he serves as an Elder.

Headshot of Mark Eulenstein Fort Collins Dentist on grey background.

Dr. Mark Eulenstein


Dr. Mark Eulenstein was born and raised in Centennial, Colorado. He attended the University of Northern Colorado where he received a bachelor’s degree in biology and a minor in chemistry. In pursuing his passion for helping others he received his EMT license before starting dental school at the University of Colorado School of Dental Medicine.

While in school Dr. Mark was awarded the Health Professions Scholarship Program with the United States Air Force. Post-graduation, Dr. Mark was selected to attend a yearlong Advanced Education in General Dentistry (AEGD) program at the United States Air Force Academy in Colorado Springs. Dr. Mark then completed a three-year assignment as a general dentist for the 28th Bomb Wing at Ellsworth Air Force Base. There he won numerous awards including Company Grade Officer of the Quarter and Ellsworth AFB Top Three.

In his free time, he enjoys skiing, golfing, and fly fishing. Most of all, Dr. Mark enjoys spending time with his wife who is originally from nearby Windsor, Colorado, two sons, and dog. As your dentist, his goal is to make you feel comfortable and provide you with the best evidence-based dentistry available.


Our Caring Team

Schaffner and Eulenstein Family dental is pleased to offer you dental care from one of the most experienced dental teams in Northern Colorado, including Fort Collins, Loveland, Greeley, Windsor, Severance, Berthoud and Red Feather.  Our experience is vital in providing you the best care possible. We also value on-going training and education. Our entire dental team is dedicated to extensive continuing education in order to deliver the most up-to-date treatments in a comfortable and modern dental office.

Four Dental Hygienists with a brick background at Schaffner and Eulenstein Family Dental

Our Dental Hygienists

Lori, Emily, Januari, and Christina
Our highly skilled dental hygienists, Lori, Emily, Januari, and Christina have over seventy-five years of combined dental hygiene experience. They provide exceptional quality routine preventive dental care and they strive to help our patients achieve outstanding oral health.

Group picture of Front Office team on grey background including Andrea, Lisa, Hannah and Liz at Schaffner and Eulenstein Family Dental

Our Front Office Team

Andrea, Lisa, Hannah and Liz
Your first contact with our office will likely be with our friendly and helpful front office team of Andrea and Lisa, they work hard to schedule your appointments in an efficient manner as well as assisting you with dental insurance and other financial matters. Dr. Schaffner’s wife, Liz, and Dr. Eulenstein's wife, Hannah, work behind the scenes to keep the office running smoothly.
Group picture of Dental Assistant team on grey background including Fabi, BrookLynn and Julia at Schaffner and Eulenstein Family Dental

Our Chairside Dental Assistants

BrookLynn, Fabi and Julia
BrookLynn, Fabi, and Julia, are our chairside dental assistants, they are enthusiastic about making dental visits comfortable and pleasant as they assist the doctors during patient treatment.

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