Dr. Koch grew up in Rensselaer, NY. In 1979 he graduated from Union College Schenectady, NY with a B.S. in Biomedical Engineering. He started his dental career at the Baltimore College of Dental Surgery, University of Maryland at Baltimore and graduated in 1983. From there he entered the US Army practicing as a general dentist at the US Army Dentac Ft. Bragg, NC 1984-87. He left the Army for his residency but remained in the US Army Reserves 1987-91 with the 100th Station Hospital Baltimore, MD. He returned to the University of Maryland Dental School for his Endodontic Residency 1987-89. He volunteered as a clinical instructor in Endodontics 1989-95 while practicing as an associate in Owings Mills, MD and eventually he opened his practice in Frederick, MD in 1991. The practice expanded to Hagerstown, MD in 1993.

​Dr. Koch is an active member of the American Association of Endodontics, American Dental Association, Maryland State Dental Association and Frederick County Dental Society. He attends national, regional, and local continuing education courses to stay at the forefront of Endodontic and Microscopic therapies for his patients. Dr. Koch met his wife Darlene while in dental school and they have been happily married since 1983. They have two grown children with whom they enjoy spending family time and engaging in outdoor sports and activities. Dr. Koch also has enjoyed donating his time and services at the western Maryland Mission of Mercy and Donated Dental Services.


Dr. Parsons is a native of Maryland and attended Thomas S. Wootton High school in Rockville. He received his Bachelor of Science degree in Biology from the University of Maryland in College Park. Following his undergraduate education, he attended the University of Maryland Dental School in 1992 where he received his Doctor of Dental Surgery degree and the Irvin I. Abramson award for outstanding skill and expertise in endodontic diagnosis and treatment. While there, he was also a member of the Gamma Pi Delta and Gorgas Honor Societies. After completing a General Practice Residency in Dental Medicine at Monmouth Medical Center in Long Branch, New Jersey, he received his specialty training and Certificate in Endodontics at the University of Maryland Dental School.

Dr. Parsons is a member of the Frederick County Dental Society for which he has served as president. He is also an active member of the American Dental Association, Maryland State Dental Association, and American Association of Endodontists. As an endodontist, he utilizes state-of-the-art technology and equipment, including the use of a surgical microscope, in order to provide the highest quality of care. He enjoys spending his free time hiking and doing other outdoor activities with his wife and three children.



Dr. Daniel Bartling was born and raised in Pittsburgh, Pennsylvania. He attended West Virginia University in Morgantown, WV earning a Bachelor’s of Science degree in Medical Technology with aspirations to fulfill a career in dentistry. Daniel went on to attend dental school at West Virginia University School of Dentistry, where he graduated magna cum laude in 2014. After dental school, he began a 12 month Advanced Education in General Dentistry Residency at C.W. Bill Young VA Medical Center in St. Petersburg, Florida. Following the completion of his residency program Daniel and his wife moved to Iowa City, Iowa where he completed his Endodontic Residency. Daniel had the opportunity to interact with all dental specialties, as University of Iowa was one of two schools in the nation that offers all nine specialties. This allowed Daniel to embrace his love for collaboration and be involved in the entire treatment planning process. Daniel’s training had an intense focus on the use of Cone Beam Computed Tomography (CBCT) as well as the most cutting edge scientific literature, allowing him to make the most current evidence-based decision making in his practice.  

After two years in the Midwest, they moved to Richmond, VA where Daniel joined a group of 60 dentists serving as the in-house Endodontist. He is now a resident of Frederick, MD and looking forward to growing new roots. He currently serves on the Continuing Education Committee for the American Association of Endodontics where he reviews and helps plan dental conferences throughout the year. He is an active member of the American Association of Endodontists, Frederick County Dental Society and study clubs in the area. He also enjoys volunteering his time to teach dental students at Virginia Commonwealth University.

Another significant part of Daniel’s life revolves around enjoying a wide variety of outdoor activities including skiing, biking, golfing, kayaking and ultimate frisbee. He also experiments with different styles of cooking including anything from traditional Italian recipes to fusion-style Asian cuisine and homemade sushi. Most of his cooking inspiration has come from his large extended family who are scattered around West Virginia and Pittsburgh.

Daniel loves interacting with his patients, staff and referring dentists. He is always open to getting together for any sort informational presentation about dentistry or even just a short meet and greet. Please do not hesitate to contact him for any help you may need.



Dr. Magdalena (Lena) Holz grew up in a small town in Southern West Virginia. She received a Bachelor of Science in Biology from Concord University, graduating Summa Cum Laude in 2009. She went on to attend dental school at West Virginia University School of Dentistry, where she graduated in the top of her class and also where she met her wonderful husband, Daniel.

While in dental school, Dr. Holz was honored to be a recipient of the Pierre Fauchard Award, the Professionalism and Clinical Sciences Award, and the Omicron Kappa Upsilon William S. Kramer Award of Excellence. She was also inducted into the Omicron Kappa Upsilon Dental Honor Society. Upon graduation, she completed a 12-month AEGD Residency program at C.W. Bill Young VA Medical Center in St. Petersburg, FL.

After practicing in general dentistry for a few years, Dr. Holz attended Virginia Commonwealth University to complete her residency in Advanced Education in Endodontics and earn a Master of Science in Dentistry. While in endodontic residency, Dr. Holz was fortunate to be able to participate in several outreach programs, where she was able to provide root canal therapy to many wonderful patients in both Israel and Jamaica, as well as provide endodontic surgery to patient’s in Guatemala.

She is an active member of the American Dental Association, Maryland State Dental Association, and American Association of Endodontists, where she also served as the resident member of the Practice Affairs Committee. She is very excited to finally be settling down with her husband and making Frederick their permanent home. In her spare time, she enjoys spending time with her friends and family; yoga, hiking, cross country skiing, biking, and anything outdoors. She loves to cook and enjoys trying all types of interesting foods.