Dental Team

All professionals at Langhorst Family Dentistry maintain the highest levels of accreditation and pursue ongoing education to stay informed of the latest trends in the dental field. Read on to learn more about our team's experience and training.

Dentist: Sarah Langhorst, DDS, FAGD

Dr. Langhorst is a graduate of the University of Michigan, School of Dentistry (D.D.S. 2011) and completed an additional residency in General & Aesthetic Dentistry at the University of Michigan.   She has practiced dentistry as an associate in dental practices in Ann Arbor and Grand Haven, MI, as a dentist in public health in Saginaw and Muskegon, MI, and she taught dentistry as a full-time and adjunct clinical instructor at the University of Michigan School of Dentistry while practicing in the Ann Arbor area.  

Dr. Langhorst believes in preventive dentistry and patient education. She strives to continually improve and was recognized as a Fellow in the Academy of General Dentistry in 2016 (FAGD). She is a member of the American Dental Association, Michigan Dental Association, West Michigan District Dental Society, and the Academy of General Dentistry. She is a member of the American Academy of Dental Sleep Medicine and has received the Qualified Dentist designation for providing oral appliance therapy for sleep disordered breathing. She previously served as a board member for the Academy of General Dentistry.

While Dr. Langhorst is originally from Midland, MI and received her B.A. degree in Chemistry from Case Western Reserve University (Cleveland, OH), she fell in love with west Michigan and has decided to make this her home by setting up her dental practice in Holland.  She enjoys outdoor activities, running, biking, playing tennis, and swimming.



Registered Dental Assistant: Riley O'Brien-Scharphorn, RDA

Riley grew up here in West Michigan. She attended Grand Rapids Community College where she completed their CODA accredited Dental Assisting Program and became a Registered Dental Assistant. However she has spent the last three years being a dental assistant in Bremerton, Washington enjoying the mountains and the Puget Sound while her husband served in the U.S. Navy. Riley strives to help anxious patients through all their dental needs and hopes to make their visit with us a little more enjoyable.

When Riley is not in the office she enjoys spending time with her husband, Austin and their beloved dog Gus doing everything and anything outside. They also enjoy spending time with their families and during hockey season cheering on The Detroit Red Wings.



Patient Care Coordinator: Cheryl Kooienga, RDA

Cheryl grew up in Jenison and has been in dentistry since high school. She was certified at the tech center, attended GRCC, and graduated from Washtenaw Community College with her degree as a Registered Dental Assistant in 2007. Cheryl has worked in dental offices in the Grand Rapids and Hudsonville areas as an assistant and at the front desk for over 30 years. She loves helping her patients achieve their best dental health while giving them a great smile!

In Cheryl's spare time, she loves spending time with her family, singing on the praise team at church, helping on the committee of Hope for Single Moms, and fishing with her husband, Jim.



Registered Dental Hygienist: Kate Levandoski, RDH

Kate has been a Registered Dental Hygienist for almost 20 years and brings a warm personality and gentle touch to her care. She is an expert in providing preventive education to our patients to help them improve their oral health. Kate grew up in Rockford, MI and completed her Dental Hygiene degree at Ferris State University. She is the mother of 4 busy kids and enjoys cheering them on at sporting events.



Patient Care Coordinator: Marsha Langhorst

Marsha is originally from the Chicago area (Crete, Illinois), but spent her adult life in Midland, Michigan where she worked for over 38 years at the Dow Chemical Company in Research & Development as an analytical chemist and research leader.  She was responsible for the development of analytical technology and methods to accelerate a broad range of new product and process research programs.  

After retirement in 2016, Marsha began a second career in dentistry.  After studying to be a dental assistant, she began working to become a certified dental business professional.  She is passionate, detail-oriented, and hard-working, and truly excited about getting to know all our new patients.  Marsha is Langhorst Family Dentistry’s resource for appointment scheduling, insurance billing, and finances.

In her free time, Marsha enjoys traveling and exercising (tennis & spinning/biking) with her husband, Marty, and spending time with her three children and three granddaughters, all residing in Michigan.